Patent application number | Description | Published |
20110064643 | APPARATUS AND METHOD FOR CONTINUOUSLY PRODUCING AND PELLETIZING GAS HYDRATES USING DUAL CYLINDER - Disclosed herein is an apparatus for continuously producing and pelletizing gas hydrates. The apparatus includes a gas supply unit, a water supply unit and a reactor. Gas and water are respectively supplied from the gas supply unit and the water supply unit into the reactor. The gas and water react with each other in the reactor. The reactor includes a dual cylinder unit which forms a gas hydrate in such a way as to squeeze a slurry of reaction water formed by the reaction between the gas and water. The dual cylinder unit includes an upper cylinder, a lower cylinder and a connection pipe which connects the upper cylinder to the lower cylinder. The connection pipe has passing holes through which the reaction water in the reactor flows into and out of the connection pipe. | 03-17-2011 |
20110263913 | DEVICE AND METHOD FOR CONTINUOUS HYDRATE PRODUCTION AND DEHYDRATION BY CENTRIFUGAL FORCE - Disclosed herein is an apparatus and method for continuously producing and dehydrating gas hydrates. The apparatus includes a gas source, a water source, a reactor, a spinning wheel, and a centrifugal separator. The gas source and the water source are connected to the reactor. Gas and water are respectively supplied from the gas source and the water source into the reactor and react with each other in the reactor to form gas hydrate slurry. The spinning wheel and the centrifugal separator are provided in the reactor. The spinning wheel supplies the formed gas hydrate slurry to the centrifugal separator. The centrifugal separator dehydrates the gas hydrate slurry. Water removed from the gas hydrate slurry by the dehydration of the centrifugal separator is re-supplied into the reactor. | 10-27-2011 |
20130149212 | DEVICE FOR REVAPORIZING NATURAL GAS - Disclosed is a device for revaporizing natural gas. Provided is a device for revaporizing natural gas hydrate pellets, comprising: a pellet charging portion for charging pellets which is formed with an upper valve and a lower valve so as to divide space for adjusting pressure; a storing portion, which communicates with the lower portion of the pellet charging portion, for receiving pellets when the lower valve is opened; a transfer screw, one end of which couples to the lower portion of the storing portion, for transferring the pellets in the storing portion; and a dissolving reaction tub, which is coupled to the other end of the transfer screw, receives pellets from the lower portion of the dissolving reaction tub, and which accommodates heating water. | 06-13-2013 |
20130158306 | DEVICE AND METHOD FOR MANUFACTURING NATURAL GAS HYDRATE - Disclosed are a device and a method for manufacturing a natural gas hydrate. Provided is the device for manufacturing a natural gas hydrate comprising: an ice slurry generation unit for preparing ice slurry having 13-20% of ice at normal pressure; a first pipe, having one end connected to the ice slurry generation unit for withdrawing the ice slurry from the ice slurry generation unit, and in which a high-pressure pump for increasing pressure on the ice slurry is interposed; a hydrate preparation reactor, which is connected to the other end of the first pipe so as to receive the pressurized ice slurry, and to which natural gas is supplied and mixed, for generating natural gas hydrate slurry; a second pipe, having one end connected to the hydrate preparation reactor, for withdrawing the natural gas hydrate slurry; and a dehydrating portion, which is connected to the other end of the second pipe, for dehydrating the natural gas hydrate slurry. | 06-20-2013 |
Patent application number | Description | Published |
20090140334 | Transistor, display driver integrated circuit including a transistor, and a method of fabricating a transistor - A transistor, a display driver integrated circuit having the transistor, and a method for fabricating a transistor are provided. A transistor, according to example embodiments, may include a substrate with a device active region defined by an isolation layer, wherein the device active region may include a source active region, a channel active region, and a drain active region and the channel active region may include a pair of edges contacting the isolation layer. The transistor, according to example embodiments, may also include a gate electrode overlapping the channel active region, wherein the edges are exposed beyond a periphery of the gate electrode, a gate dielectric between the gate electrode and the channel active region, and source and drain impurity regions within the source and drain active regions. | 06-04-2009 |
20090309161 | Semiconductor integrated circuit device - A semiconductor integrated circuit device and a method of fabricating the same for increasing channel length while permitting the channel to remain stable. The semiconductor integrated circuit device includes a semiconductor substrate with lightly-doped impurity regions, a gate stack, and offset spacers. The gate stack includes an insulating layer formed on the semiconductor substrate and a gate electrode formed on the gate insulating layer. The offset spacers are formed of an insulating material having high dielectric constant on both sidewalls of the gate stack. | 12-17-2009 |
20110248342 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND METHOD OF FABRICATING THE SAME - A semiconductor integrated circuit device and method of fabricating a semiconductor integrated circuit device, the method including preparing a first conductivity type substrate including a first conductivity type impurity such that the first conductivity type substrate has a first impurity concentration; forming a buried impurity layer using blank implant such that the buried impurity layer includes a first conductivity type impurity and has a second impurity concentration higher than the first impurity concentration; forming an epitaxial layer on the substrate having the buried impurity layer thereon; and forming semiconductor devices and a device isolation region in or on the epitaxial layer. | 10-13-2011 |
20130256794 | METAL OXIDE SEMICONDUCTOR DEVICES WITH MULTIPLE DRIFT REGIONS - A semiconductor device includes a semiconductor substrate of a first conductivity type, a buried layer a second conductivity type different from the first conductivity type on the substrate and an epitaxial layer of the second conductivity type on the buried layer. The device further includes a pocket well of the first conductivity type in the epitaxial layer, a first drift region in the epitaxial layer at least partially overlapping the pocket well, a second drift region in the epitaxial layer and spaced apart from the first drift region, and a body region of the first conductivity type in the pocket well. A gate electrode is disposed on the body region, the pocket well and the first drift region and has an edge overlying the epitaxial region between the first and second drift regions. | 10-03-2013 |
Patent application number | Description | Published |
20090154418 | APPARATUS AND METHOD FOR DYNAMIC RESOURCE ALLOCATION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for dynamic resource allocation in a wireless communication system are provided. A method of operating a Base Station (BS) includes configuring a bitmap to indicate whether radio resources are allocated to respective Access Terminals (ATs) according to resource scheduling, generating a resource allocation message including at least one of the configured bitmap, bit allocation information of the bitmap, and bit deallocation information of the bitmap, and transmitting the resource allocation message. | 06-18-2009 |
20110149821 | METHOD AND SYSTEM FOR MANAGING AN INACTIVE INTERVAL OF A BASE STATION - A method and system for managing an inactive interval of a Base Station (BS) are provided, in which the BS transmits a preferred Low-Duty Mode (LDM) pattern to a coordination server that manages LDM patterns of BSs, receives an LDM pattern from the coordination server, the LDM pattern being determined for the BS by the coordination server, taking into account the preferred LDM pattern and LDM patterns of neighbor BSs, and operates in an active interval and an inactive interval according to the received LDM pattern. | 06-23-2011 |
20120275422 | APPARATUS AND METHOD FOR DYNAMIC RESOURCE ALLOCATION IN BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for dynamic resource allocation in a wireless communication system are provided. A method of operating a Base Station (BS) includes configuring a bitmap to indicate whether radio resources are allocated to respective Access Terminals (ATs) according to resource scheduling, generating a resource allocation message including the configured bitmap and at least one of bit allocation information of the bitmap and bit deallocation information of the bitmap, and transmitting the resource allocation message. | 11-01-2012 |
20140159423 | FRONTAL COLLISION IMPACT ABSORBING DEVICE FOR VEHICLE - A device for absorbing frontal collision impact for a vehicle includes side members extending in the length direction of the vehicle and impact-absorbing structures mounted on the side members and protruding outward in the width direction of the vehicle. The device can effectively cope with a frontal small offset collision of a vehicle. | 06-12-2014 |
Patent application number | Description | Published |
20150104932 | COMPOSITIONS FOR ETCHING AND METHODS OF FORMING A SEMICONDUCTOR DEVICE USING THE SAME - Etching compositions are provided. The etching composition includes a phosphoric acid, ammonium ions and a silicon compound. The silicon compound includes a silicon atom, an atomic group having an amino group combined with the silicon atom, and at least two oxygen atoms combined with the silicon atom. Methods utilizing the etching compositions are also provided. | 04-16-2015 |
20150348799 | COMPOSITIONS FOR ETCHING - Etching compositions are provided. The etching composition includes a phosphoric acid, ammonium ions and a silicon compound material. The silicon compound material includes a silicon atom, at least one selected from the group of a nitrogen atom, a phosphorus atom and a sulfur atom combined with the silicon atom, and at least two oxygen atoms combined with the silicon atom. Methods utilizing the etching compositions are also provided. | 12-03-2015 |
20160082944 | Apparatus and Method for Controlling Driving of Hybrid Vehicle - Disclosed are apparatuses and methods for controlling driving of a hybrid vehicle. A method may include calculating a rate-of-change of a motor rpm, calculating a second reference rpm depending on the calculated rate-of-change of the motor rpm by varying a first reference rpm that has been set to engage an engine clutch, where the second reference rpm is newly set to engage the engine clutch, and controlling a vehicle drive mode by determining whether to start an engine and engage the engine clutch according to whether the motor rpm reaches the second reference rpm. | 03-24-2016 |
20160090077 | CONTROL METHOD OF HYBRID VEHICLE - A control method of a hybrid vehicle may include performing a series of commands by a control portion including determining whether an accelerator pedal change amount detected by an accelerator pedal sensor is greater than a predetermined value, starting up an engine through a Hybrid Shaft Generator (HSG) during conversion into an HEV mode from an EV mode, controlling the engine to output constant torque, and synchronizing engine torque with motor torque to engage a clutch. | 03-31-2016 |
Patent application number | Description | Published |
20130321937 | CAMERA MODULE - Disclosed herein is a camera module in which a movement of a magnet is controlled by only magnetic force between the magnet and a yoke without a spring for controlling the movement of the magnet which operates up and down. The camera module includes: a lens module; and a main frame supporting the lens module and allowing the lens module to be driven in an optical axis direction, wherein the lens module includes: a lens assembly including a plurality of lenses; and a magnet fixed to one side of the lens module, and the main frame includes: a coil facing the magnet, fixed to one side within the main frame, and generating an electric field as power is applied thereto; and a yoke disposed to face the magnet with the main frame and the coil interposed therebetween and controlling driving of the lens module by attraction with the magnet. | 12-05-2013 |
20140009089 | APPARATUS AND METHOD FOR DRIVING VOICE COIL MOTOR - There are provided an apparatus and a method for driving a voice coil motor (VCM), the apparatus including an instruction signal generating unit generating an instruction signal according to a digital signal generated from an input signal, and a driving unit driving the voice coil motor (VCM) by selecting a path for a driving current applied to the voice coil motor (VCM) according to the digital signal and controlling a duty of the driving current according to the instruction signal. | 01-09-2014 |
20140098434 | LENS ACTUATOR - There is provided a lens actuator, including: a lens barrel in which at least one lens is provided on an optical axis; a magnetic part provided on one surface of the lens barrel; and a printed circuit board in which a coil pattern part generating electromagnetic force is provided, the printed circuit board having one surface facing the magnetic part, wherein magnetic material is provided on the other surface of the printed circuit board. | 04-10-2014 |
20140168497 | CAMERA MODULE DRIVER AND CAMERA MODULE INCLUDING THE SAME - There are provided a camera module driver and a camera module including the same. The camera module driver includes: a driving unit driving a lens; and a memory unit storing an operation setting value of the driving unit, wherein the driving unit includes a register sensing application of power to perform a reset operation of changing arbitrarily distributed data into preset default data, and the driving unit and the memory unit are formed in a single integrated circuit. | 06-19-2014 |
Patent application number | Description | Published |
20100025790 | IMAGE SENSOR AND METHOD OF MANUFACTURING THE SAME - Disclosed are an image sensor and a method of manufacturing the same. The image sensor includes a semiconductor substrate having first and second surfaces opposite to each other, an isolation layer defining an active region while extending from the first surface toward the second surface, a photodiode in the active region and extending from the first surface toward the second surface, a reflection part adjacent to the first surface and disposed corresponding to the photodiode, and a lens part adjacent to the second surface. | 02-04-2010 |
20100109113 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - Disclosed are an image sensor and a method for manufacturing the same. The image sensor includes a semiconductor substrate formed on a first surface thereof with a readout circuitry and a photodiode area; a metal interconnection layer formed on the first surface; a connection via metal extending from the first surface to a second surface of the semiconductor substrate, the connection via metal having a projection part projecting from the second surface; an insulating layer formed on the first surface of the semiconductor substrate to expose the projection part while surrounding a portion of a lateral side of the projection part; and a metal pad formed on the insulating layer such that the metal pad covers the projection part, thereby shortening an optical path to reduce light loss and improve image sensitivity. | 05-06-2010 |
20100155868 | IMAGE SENSOR AND MANUFACTURING METHOD THEREOF - Disclosed are an image sensor and a manufacturing method thereof. The image sensor includes a circuit layer on a first surface of a semiconductor substrate, a metal interconnection layer on the circuit layer, trenches formed in a second surface of the semiconductor substrate along a boundary of a pixel, and a light blocking layer in the trenches. The backside illumination type image sensor according to the embodiment has a light blocking structure at a rear surface of the semiconductor substrate, thereby improving sensing efficiency while inhibiting interference between adjacent pixels. | 06-24-2010 |
20100163940 | IMAGE SENSOR AND METHOD FOR MANUFACTURING THE SAME - Provided are an image sensor and a method for manufacturing the same. The image sensor comprises a photodiode, a floating diffusion region, a reset transistor, and a drive transistor. The photodiode generates photocharges. The floating diffusion region accumulates the photocharges. The reset transistor has a source connected to the floating diffusion region, and has a gate and a drain connected to each other to perform a reset function. The drive transistor receives the photocharges and serves as a source follower buffer amplifier. | 07-01-2010 |
Patent application number | Description | Published |
20090077581 | Method for channel change in digital broadcasting - The present invention offers a method for channel change in digital broadcasting consisting of: a step 1 for recognizing a command for a channel change while the currently connected channel is being decoded at the digital broadcasting terminal; a step 2 for completing reception of the current stream while maintaining the received picture if there is a command for a channel change according to said step 1; a step 3 for receiving and analyzing the information of the newly concatenated stream without re-initializing the decoder and concatenating two streams; and a step 4 for renewing information of the newly concatenated stream in order to maintain continuity between the previous stream and the newly concatenated stream using the information obtained in said steps 2 and 3. Therefore, time delay during channel change will be minimized by changing channels without decoder re-initialization and without break in the channel changing time. | 03-19-2009 |
20110061268 | SOLE HAVING THE TILT SURFACE AND THE KNEE JOINT-PROTECTING SHOE COMPRISING THE SAME - The present invention relates to a sole having a tilt surface, and to a knee joint-protecting shoe including same, and more particularly, to a sole having a tilt surface in which the tilt surface formed at the sole of a shoe enables the foot of a wearer to be inclined or slipped, inwardly or outwardly, in order to correct abnormality in the lower skeletal extremity, and uniformly distribute load on the knee joint of the wearer to prevent degenerative knee arthritis and alleviate pain, and to a knee joint-protecting shoe including the outsole. The present invention further comprises a sole having a tilt surface for attachment to the bottom surface of a shoe, wherein the outsole has a top surface and a bottom surface formed parallel to each other, a tilt structure including an upper member and a lower member defined by a tilt surface formed in the widthwise direction, and deformable members arranged at predetermined intervals from both front and rear ends of the shoe in a lengthwise direction to generate shear deformation in a tilted direction between the upper member and the lower member. | 03-17-2011 |
20110273342 | COMMUNICATION TERMINAL AND ANTENNA APPARATUS THEREOF - A communication terminal and an antenna apparatus of the communication terminal are provided. The communication terminal includes a body having a circuit board, an antenna element which is mounted inside the body and connected electrically to the circuit board and, when electric current is supplied via a main plate, resonant in a resonant frequency band for transmitting and receiving signals, and a metal case having an antenna pattern which is coupled to an edge of the body to be resonant and, when the antenna element is resonant, in the resonant frequency band for supporting operation of the antenna element. | 11-10-2011 |
20110296717 | SHOE HAVING A FUNCTIONAL SOLE FOR DEGENERATIVE OSTEOARTHRITIS OF KNEE JOINT - Disclosed therein is a shoe having a functional sole for degenerative osteoarthritis of a knee joint, which includes a sole having at least one of an insole, a midsole and an outsole, characterized in that, in longitudinal section of the insole, the outsole or the midsole formed integrally with one of the insole and the outsole, both sides of an inner face and an outer face thereof are not parallel with each other, and that an angle of one of both sides of the inner face or the outer face to the ground outside the sole is smaller than an angle of the opposed side to the ground outside the sole. | 12-08-2011 |
20120313834 | ANTENNA DEVICE FOR A PORTABLE TERMINAL - An antenna device attains good antenna performance using at least one or more metal members installed in a portable terminal The antenna device includes a main board equipped with a power supply part for supplying power, a slot part which is positioned in at least one or more metal members or is formed by a combination of the metal members, and a power supply antenna member for receiving power from the power supply part and which is electromagnetically coupled with the slot part. | 12-13-2012 |
20130181871 | ANTENNA DEVICE FOR PORTABLE TERMINAL - An antenna device for a portable terminal having a printed circuit board (PCB) is disclosed. The antenna device is comprised of first and second antenna elements. The first antenna element includes at least a portion of one or more metal members disposed within the portable terminal; is electrically connected with a ground surface of the PCB; and has a slot. The second antenna element, is disposed in proximity to the slot, spaced from and electromagnetically coupled to the first antenna element. The second antenna element receives RF power from the PCB and is configured to resonate at a frequency of the RF power. | 07-18-2013 |
20140132467 | ANTENNA USING SLOT IN MOBILE TERMINAL - An antenna using a slot formed by assembling a mobile terminal case and a metal structure (e.g., a bracket), is disclosed. The antenna reduces deterioration of antenna performance resulting from frequency interference or electromagnetic interference. The antenna can be used in various frequency bands. | 05-15-2014 |
20140292589 | ANTENNA FOR PORTABLE DEVICE - An antenna device of a portable device such as a smartphone includes a connecting member having a conductive case and mounted on a circuit board of the portable device in a manner such that the case is connected to a ground surface of the circuit board; a radiator spaced from the circuit board; and at least one connecting pin provided between the case and the radiator. The radiator is connected to the ground surface through the connecting pin and the case. The antenna device advantageously may be easily installed in the internal space of a miniaturized, lightened and/or slimmed portable device by practically using a conductive component, e.g., the case, of the connecting member. | 10-02-2014 |
20150116933 | CASE INCLUDING METAL FOR AN ELECTRONIC DEVICE AND ELECTRONIC DEVICE HAVING THE SAME - A case including metal for an electronic device and an electronic device having the same are provided. The electronic device includes a case comprising an injection-molded part including a plurality of holes, and a metal part formed under the injection-molded part, and the metal part being partially exposed through the plurality of holes. The metal part is divided into a plurality of parts via a cut portion formed in a portion of the metal part not exposed through the plurality of holes, and at least one of the plurality of the divided metal parts is utilized as a component element related to a specific function of the electronic device. | 04-30-2015 |
20150123857 | ELECTRONIC APPARATUS INCLUDING ANTENNA DEVICE - An electronic apparatus is provided. The electronic apparatus includes at least one first antenna radiator, a main board including a feed part that is spaced apart from at least one portion of the at least one first antenna radiator to overlap the at least one portion of the at least one first antenna radiator and feeds an electric current to the at least one first antenna radiator according to an indirect feed method, at least one second antenna radiator disposed on a housing of the electronic apparatus, at least one first connection member for electrically connecting the at least one first antenna radiator to the at least one second antenna radiator, and at least one second connection member for electrically connecting a ground part formed on the main board to the at least one second antenna radiator. Also, other various exemplary may be implemented. | 05-07-2015 |
20150155618 | ANTENNA DEVICE FOR A PORTABLE TERMINAL - An antenna device attains good antenna performance using at least one or more metal members installed in a portable terminal. The antenna device includes a main board equipped with a power supply part for supplying power, a slot part which is positioned in at least one or more metal members or is formed by a combination of the metal members, and a power supply antenna member for receiving power from the power supply part and which is electromagnetically coupled with the slot part. | 06-04-2015 |
Patent application number | Description | Published |
20140088315 | METHOD FOR PREPARATION OF ANHYDROSUGAR ALCOHOLS - Disclosed is a method for the preparation of an anhydrosugar alcohol using a starch-derived hexitol such as sorbitol or mannitol Anhydrosugar alcohol is in the form of a diol having two hydroxyl groups in the molecule thereof and has a very high utility value as a physical property modifier which can be used primarily in plastics. Representative examples of anhydrosugar alcohols include isosorbide and isomannide. These anhydrosugar alcohols are capable of increasing a glass transition temperature of and improving strength of PET, polyesters, polycarbonates, etc., and are therefore highly valuable as biodegradable environmentally-friendly bioplastics. | 03-27-2014 |
20150094477 | PRODUCTION METHOD FOR ANHYDRO SUGAR ALCOHOL HAVING MARKEDLY REDUCED ION CONTENT AND IMPROVED COLOUR CHARACTERISTICS - The present invention relates to a production method for an anhydro sugar alcohol having a markedly reduced ion content and improved colour characteristics, and, more specifically, relates to a method for producing an anhydrous sugar alcohol having a markedly reduced ion content, markedly lowered electrical conductivity and improved colour characteristics, which is obtained by subjecting hydrogenated sugar (sugar alcohol) to a dehydration reaction and thereby converting same to an anhydrous sugar alcohol and then subjecting distilled water, which has been isolated through a distillation step, to a decolourizing process using activated carbon, and subsequently bringing the resulting decolourized substance into contact with an ion exchange resin. | 04-02-2015 |
20150112088 | METHOD FOR PREPARING HIGH PURITY ANHYDROSUGAR ALCOHOLS BY THIN FILM DISTILLATION - The present invention relates to a method for preparing high purity anhydrosugar alcohols using hydrogenated sugar, and more specifically, to a method for preparing high purity anhydrosugar alcohols (particularly, isosorbide, isomannide, isoidide, and the like) with a purity of 97.5% or higher (more preferably, 98.5% or higher) and a pH of a distillate of 3.7 or higher (more preferably, 4.0 or higher) in a distillation yield of 87% or higher (more preferably, 90% or higher) by adding an acid to hexitol so as to convert the same into anhydrosugar alcohols, and single-stage distilling the converted product by using an internal condenser type thin film evaporator. | 04-23-2015 |
20150252054 | METHOD FOR PREPARING HIGH-PURITY ANHYDROSUGAR ALCOHOL HAVING IMPROVED YIELD BY USING WASTE FROM CRYSTALLIZATION STEP - The present invention relates to a technique for preparing an anhydrosugar alcohol using hydrogenated sugar as a raw material and, more specifically, to a technique for preparing a high-purity anhydrosugar alcohol by adding an acid to hydrogenated sugar (for example, hexitol) to convert same to an anhydrosugar alcohol, then distilling the converted liquid, and crystallizing the distilled liquid in a solvent, the technique removing a crystallization solvent from a crystallization mother liquor generated during a crystallization step and then introducing the resultant product together with the distilled liquid and the converted liquid into a distillation step, thereby being capable of improving the total distillation yield of the anhydrosugar alcohol, improving distillation efficiency by improving the mobility of a distillate, and further reducing the amount of generated waste and treatment costs and thus highly efficiently preparing the high-purity anhydrosugar alcohol at reduced costs. | 09-10-2015 |
20150299216 | METHOD FOR PREPARING ANHYDROUS SUGAR ALCOHOL - The present invention relates to a method for preparing anhydrous sugar alcohol, and more particularly, to a cheap and highly efficient method for preparing anhydrous sugar alcohol having a high final purity of at least 99%, and having good ion content, pH, conductivity, and color properties. According to the method, a hydrogenated sugar is dehydrated so as to be transformed into anhydrous sugar alcohol, and a series of processes including distillation, crystallization, decoloration, and ion exchange resin treatment are conducted. | 10-22-2015 |
20150307511 | METHOD FOR PREPARING HIGH-PURITY ANHYDROSUGAR ALCOHOL USING SEQUENTIAL COMBINATION OF THIN FILM DISTILLATION AND SHORT PATH DISTILLATION - The present invention relates to a technique for preparing an anhydrosugar alcohol using hydrogenated sugar as a raw material and, more specifically, to a technique for preparing a high-purity anhydrosugar alcohol (in particular, isosorbide, isomannide, isoidide, and the like) having a purity of 98% or higher and containing less than 0.1% of sorbitol and a sorbitan isomer, which are impurities, in a high total distillation yield of 94% or higher (more preferably, 95% or higher) by adding an acid to hydrogenated sugar (for example, hexitol) to convert same to an anhydrosugar alcohol, and then distilling the converted liquid over two or more stages by sequentially using a combination of an external condenser type wiped film evaporator and an internal condenser type short path evaporator. | 10-29-2015 |
20150329448 | METHOD FOR PREPARING AN ANHYDROSUGAR ALCOHOL USING HYDROL - The present invention relates to a method for preparing an anhydrosugar alcohol using hydrol (namely, a crystalline mother liquor remaining after obtaining crystalline glucose from a crude glucose liquor). More particularly, the present invention relates to a method for preparing an anhydrosugar alcohol in a method for performing a dehydration reaction on the hydrogenated sugar so as to convert the hydrogenated sugar to an anhydrosugar alcohol, wherein the method for preparing an anhydrosugar alcohol is configured to use, as at least a portion of the hydrogenated sugar, the product obtained from the hydrogenation of the hydrol which is a by-product or waste generated during the production of glucose, thus relatively lowering the cost for a material as compared with a case of using a high purity raw material (for example, high purity sorbitol), to thus improve economical advantages, and further reduce the amount of waste and cost for disposal of the waste during the production of glucose. | 11-19-2015 |
20150353574 | METHOD FOR PRODUCING ANHYDROSUGAR ALCOHOL THROUGH CONTINUOUS DEHYDRATION REACTION OF HYDROGENATED SUGAR - The present invention relates to a method for producing an anhydrosugar alcohol and, more specifically, to a method for producing an anhydrosugar alcohol which, when the step of subjecting a hydrogenated sugar to a dehydration reaction in a reactor so as to convert same to an anhydrosugar alcohol is performed, allows the hydrogenated sugar to be continuously introduced into the reactor and the produced anhydrosugar alcohol to be continuously discharged out of the reactor while the dehydration reaction is carried out, also prevents a reaction mixture from circulating inside and outside the reactor while the dehydration reaction is carried out, and thereby can significantly improve production efficiency compared with a conventional process adopting a batch or semi-batch-type dehydration reaction and thus can be appropriately applied particularly to a large-scale anhydrosugar alcohol production process. | 12-10-2015 |