NAGAOKA UNIVERSITY OF TECHNOLOGY Patent applications |
Patent application number | Title | Published |
20140233280 | POWER CONVERSION DEVICE - An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value. A second switching time is calculated using a carrier and the first switching time. A control signal generating section generates control signals to switch on and off of the switching elements using the first switching time and second switching time. In a case where a state is transited from the first switching time to the second switching time, a controller tarns off one of on state switching elements of either one of an upper arm circuit or a lower arm circuit and maintains on state of the other of the on state switching elements of the other arm circuit. | 08-21-2014 |
20140192578 | POWER CONVERTER - Provided is a power converter | 07-10-2014 |
20140185326 | POWER CONVERSION DEVICE - There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices | 07-03-2014 |
20140126263 | POWER CONVERSION DEVICE - There is disclosed a power conversion apparatus | 05-08-2014 |
20140104913 | POWER CONVERSION DEVICE - Provided is a power converter | 04-17-2014 |
20140085956 | POWER CONVERSION DEVICE - A power conversion apparatus is for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices | 03-27-2014 |
20140085950 | POWER CONVERSION DEVICE - Provided is a power converter | 03-27-2014 |
20110319784 | EMOTIONAL STATE DETERMINING APPARATUS - An emotional state determining apparatus capable of determining an emotional state of a subject without reducing determination accuracy even if the number of brain wave signals to be used is reduced. A multifractal dimension computing section | 12-29-2011 |
20110166301 | POLYESTERS, POLYURETHANES AND PROCESS FOR THEIR PRODUCTION - The invention provides biodegradable polyesters, polyurethanes, comprising 3-carboxymuconolactone as a structural unit, 3-carboxymuconolactone esters and a process for their production. | 07-07-2011 |
20110160039 | METHOD FOR MANUFACTURING ZEOLITE MEMBRANE, AND ZEOLITE MEMBRANE - There is provided a zeolite membrane which is thinner than a conventional membrane and which has improved permeability and a method for manufacturing the zeolite membrane. The method includes a surface layer forming step for forming a surface layer by attaching a low polar polymer on a first surface of a porous substrate to cover the surface, a filling step for filling a masking polymer into pores in the porous substrate from a surface different from the first surface of the porous substrate up to the surface layer by impregnating the porous substrate with the masking polymer and solidifying the masking polymer, and a surface layer removing step for removing the surface layer. After the surface layer removing step, a zeolite membrane is formed on the first surface of the porous substrate. | 06-30-2011 |
20100274504 | FLUID ANALYSIS METHOD AND FLUID ANALYSIS DEVICE - There is provided a fluid analysis method and its device which are capable of easily analyzing a normal stress difference of a low-viscosity fluid in addition to that of a high-viscosity fluid. A shearing fluidity is applied to a non-Newtonian fluid within a lateral-side gap by pushing a cylindrical bob into a container. At that time, reactive force applied to the cylindrical bob is measured. Then, by practicing an arithmetic process in a given form using the reactive force and each of conditions input by a user, the normal stress difference of the low-viscosity non-Newtonian fluid which is hard to form in a solid state can be certainly determined. Thus, with respect to the low-viscosity non-Newtonian fluid in addition to the high-viscosity non-Newtonian fluid, the normal stress difference can be easily analyzed. | 10-28-2010 |
20100257976 | Protective Gas Composition For Magnesium/Magnesium Alloy Production And Combustion Preventing Method - There is provided a protective gas composition for preventing combustion of a molten magnesium/magnesium alloy, containing a compound selected from the group consisting of 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,3,3,3-tetrafluoropropene (OHFC-1234ze), methyl 1,1,2,2-tetrafluoroethyl ether (HFE-254pc), which are fluorine-containing organic compounds, and mixtures thereof; and a carrier gas. | 10-14-2010 |
20100228504 | PLANAR ELONGATIONAL VISCOSITY MEASURING METHOD AND PLANAR ELONGATIONAL VISCOSITY MEASURING APPARATUS - A planar elongational viscosity measuring method and apparatus which can advance analysis of planar elongational viscosities for high-viscosity and low-viscosity fluids. As a bomb-shell like bob | 09-09-2010 |
20100209978 | GENE-DISRUPTED STRAIN, RECOMBINANT PLASMIDS, TRANSFORMANTS AND PROCESS FOR PRODUCTION OF 3-CARBOXYMUCONOLACTONE - Industrial-scale fermentative production of 3-carboxy-cis,cis-muconic acid from terephthalic acid. Also, a protocatechuate 4,5-ring-cleaving enzyme gene-disrupted strain in which the gene coding for (a) the amino acid sequence set forth in SEQ ID NO: 1 or 3, or (b) the amino acid sequence set forth in SEQ ID NO: 1 or 3 which has a deletion, substitution, addition and/or insertion of one or more amino acids and exhibits protocatechuate 4,5-ring cleavage activity, present in the chromosomal DNA of microbial cells, has been disrupted; recombinant plasmids comprising the Tph gene and protocatechuate 3,4-dioxygenase gene; transformants obtained by introducing the recombinant plasmids into the disrupted strain; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of terephthalic acid. | 08-19-2010 |
20100116015 | DEEP-DRAWING DEVICE - A deep drawing apparatus is provided in which a sheet material is subjected to optimal heating and cooling, whereby the limiting draw ratio is increased and a product can be worked more deeply, and uniformity of the sheet thickness of the product can be controlled. This apparatus includes: a punch | 05-13-2010 |
20090047202 | Method for Producing Aluminate Phosphor and Aluminate Phosphor - The present invention provides a novel aluminate phosphor capable of emitting blue fluorescence having high color purity and high brightness in a certain wavelength range by ultraviolet ray excitation and electron beam excitation, and a useful production method thereof. The method for producing an aluminate phosphor according to the present invention is characterized in comprising a step of heating an aluminate represented by a composition formula: 7(Sr | 02-19-2009 |
20080315123 | Optical component and method for its production - To obtain an optical component having excellent secondary optical nonlinear properties by irradiating a surface and/or inside of glass having at least one member selected from Ni, Fe, V, Cu, Cr and Mn as a heat source material for absorbing and converting a laser beam to heat, incorporated to a glass matrix comprising at least one glass-forming oxide-selected from SiO | 12-25-2008 |
20080226894 | YTTRIUM OXIDE-CONTAINING MATERIAL, COMPONENT OF SEMICONDUCTOR MANUFACTURING EQUIPMENT, AND METHOD OF PRODUCING YTTRIUM OXIDE-CONTAINING MATERIAL - There is provided an yttrium oxide-containing material with excellent mechanical characteristics. The yttrium oxide-containing material becomes strong by adding silicon carbide (SiC) and yttrium fluoride (YF | 09-18-2008 |
20080213850 | Pretreatment of Waste Mushroom Bed and Method of Converting the Same to Yield Sugars and Ethanol - It is an objective of the present invention to develop a method of pretreating a waste mushroom bed so as to easily and efficiently obtain sugars and ethanol with the use of such waste mushroom bed. It is another objective of the present invention to develop a method of converting the pretreated waste mushroom bed to yield sugars and ethanol. According to the present invention, it has been found that the above objective can be achieved by maintaining a waste mushroom bed at 4° C. to 30° C. for 1 week or longer after harvesting of fruit bodies for conversion of the waste mushroom bed to yield sugars and ethanol. | 09-04-2008 |