Yakuwa, JP
Atsushi Yakuwa, Tokyo JP
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20100164670 | COIL SUBSTRATE STRUCTURE, SUBSTRATE HOLDING STRUCTURE, AND SWITCHING POWER SUPPLY - A coil substrate structure which enhances heat dissipation and fully secures a mounting area is provided. A coil substrate structure | 07-01-2010 |
Hiroshi Yakuwa, Tokyo JP
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20080241406 | Electroless plating bath and method for producing high-temperature apparatus member using the bath - There is provided an electroless plating bath which makes it possible to form a diffusion barrier layer of a Re-based alloy, having a uniform thickness regardless of the shape and size of a workpiece, on the surface of a Ni-based alloy by a relatively simple method. The electroless plating bath for forming a Ni—Re—B alloy, containing not less than 50 at % of Re, on a substrate by electroless plating, has a pH of 6 to 8 and includes a metal supply source component containing Ni2+ and ReO4− at an equal equivalent in the range of 0.01 to 0.5 mol/L, a complexing agent component containing citric acid and at least one other organic acid, and a reducing agent component containing dimethylamine-borane. | 10-02-2008 |
20080241558 | Method for forming corrosion-resistant film and high-temperature apparatus member - There is provided a method for forming a corrosion-resistant protective film, which can preventing peel off of the protective film and enables long-term stable use of the film under high-temperature conditions. The corrosion-resistant film forming method includes the steps of: carrying out Ni (or Ni—B) plating of a surface of a substrate of a Ni—Cr alloy to form a Ni (or Ni—B) layer on the substrate surface; and carrying out Al diffusion treatment of the surface of the Ni (or Ni—B) layer to form a protective layer of Ni—Al. | 10-02-2008 |
20150135809 | EROSION PREDICTION METHOD, EROSION PREDICTION SYSTEM, EROSION CHARACTERISTICS DATABASE USED IN THIS PREDICTION, AND METHOD CONSTRUCTING THE SAME - To provide an erosion characteristics database and a method for constructing the same, an erosion prediction method and an erosion prediction system using the database for predicting a widespread erosion amount of a fluid machine or the like in a short time without the need for an operation of a model machine or an actual machine. | 05-21-2015 |
Kazuo Yakuwa, Kanagawa JP
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20120091927 | METHOD OF MEASURING AND EVALUATING MECHANICAL OUTPUTS OF PIEZOELECTRIC ACTUATORS, CONTROLLING METHOD OF THE SAME, AND APPARATUS USING THOSE METHODS - The present invention relates to a method of measuring and evaluating rigidity of a target object or mechanical output, such as force, displacement, and mechanical energy generated by a piezoelectric actuator and applied to the target object, according to only a measured value of electric quantity without use of a mechanical sensor, and a method of controlling the piezoelectric actuator, and a device using these methods. | 04-19-2012 |
Ken Yakuwa, Kawasaki JP
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20080239560 | MAGNETIC DEVICE AND METHOD OF CONTROLLING MAGNETIC DEVICE - According to an aspect of an embodiment, a magnetic device comprises a head for writing data into or reading data from a medium, the head having an actuator for changing a flying height of the head over the medium, a storage for storing characteristic information of areas of the medium and a controller for controlling the actuator on the basis of the characteristic information of the areas of the medium when writing data into or reading data from the areas of the medium. | 10-02-2008 |
Masakazu Yakuwa, Saitama JP
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20080230320 | Vehicle for High Lift Work - The vehicle for high lift work | 09-25-2008 |
Naoki Yakuwa, Tokyo JP
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20110274218 | DUAL POLARIZATION TRANSMISSION SYSTEM, DUAL POLARIZATION TRANSMISSION METHOD, RECEPTION APPARATUS, TRANSMISSION APPARATUS, RECEPTION METHOD, AND TRANSMISSION METHOD - A receiving device of a dual polarization transmission system includes: a receiver that receives an RF signal that is transmitted with the use of two orthogonal polarizations; two reception local oscillators that include PPL circuits to convert the received RF signal of each of the polarizations into an IF signal; and a demodulator that demodulates an IF signal of one polarization, which is obtained by the conversion, into a baseband signal. The reception local oscillators control a loop band of the PLL circuits in response to a signal from the demodulator. | 11-10-2011 |
Shinpei Yakuwa, Ibaraki-Shi JP
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20130309481 | ELECTRICALLY INSULATING RESIN SHEET FOR MOTORS AND PROCESS FOR PRODUCTION THEREOF - Provided are: an electrically insulating resin sheet for motors, which is used for achieving the insulation between coil wires or between a coil wire and an iron core in a motor, and which has high heat resistance, high electrical insulation performance and a high insulation breakdown voltage; and a process for producing the electrically insulating resin sheet. The electrically insulating resin sheet for motors, which is provided with a porous resin layer comprising a thermoplastic resin, is characterized in that the resin sheet has a relative permittivity of 2.0 or less at 1 GHz. It is preferred that the porous resin layer has an average cell diameter of 5.0 μm or less and contains cells in such an amount that the porosity is 30% or more. | 11-21-2013 |
20140127494 | POLYIMIDE POROUS BODY AND METHOD FOR PRODUCING SAME - An object of the present invention is to provide a polyimide porous body having an excellent heat resistance, a fine cell structure, and a low relative dielectric constant, and a method for producing the polyimide porous body. The present invention relates to a method for producing a polyimide porous body, comprising a step for applying a polymer solution containing a polyamide acid, a phase separation agent for separating the phases of the polyamide acid, an imidization catalyst, and a dehydrating agent, on a substrate, and drying the polymer solution to produce a phase-separated structure body having a microphase-separated structure; a step for producing a porous body by removing the phase separation agent from the phase-separated structure body; and a step for subjecting the polyamide acid in the porous body to imidization to synthesize a polyimide. | 05-08-2014 |
20140295168 | ELECTRICALLY INSULATING RESIN SHEET - An object of the present invention is to provide an electrically insulating resin sheet which is excellent in heat resistance and insulating properties and is able to maintain a predetermined shape even after applying an external force to the sheet to deform the sheet into a predetermined shape and removing the external force. An electrically insulating resin sheet having a porosity of 10 to 60%, a stress relaxation ratio of 20% or more when the sheet is extended by 5% at 23° C. and maintained for 10 minutes, and an insulation breakdown voltage of 25 kV/mm or more. | 10-02-2014 |
Shinpei Yakuwa, Osaka JP
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20090322040 | Gasket material - The present invention provides a gasket material to be placed between two opposing faces to provide a tight closure between them. The gasket material of the present invention, wherein an adhesive layer comprised of a cured product obtained by reacting a polyoxyalkylene polymer having at least one alkenyl group in each molecule with a compound containing two or more hydrosilyl groups on average in each molecule is formed on both surfaces of a substrate sheet, is superior in elasticity and compaction property, shows superior adhesion to various materials, does not cause cohesive failure during detachment and is superior in removability. Therefore, a superior sealing effect lasts for a long time, the gasket material can be removed without leaving residues of the adhesive layer on an adherend after removal, and workability including removal of the gasket material can be improved. | 12-31-2009 |
Shinpei Yakuwa, Ibaraki-Shi, Osaka JP
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20150329675 | POLYETHERIMIDE POROUS BODY AND METHOD FOR PRODUCING SAME - Provided are: a polyetherimide porous body which has a low relative permittivity and is not easily cracked (or is excellent in cracking resistance) when folded, and a method for producing the porous body. This polyetherimide porous body comprises a polyetherimide crosslinked body and has a gel fraction of 10% or more, an average cell diameter of 8 μm or less, a volume porosity of 30% or more and an insulation breakdown voltage of 30 kV/mm or more. | 11-19-2015 |
20150344662 | POLYETHERIMIDE POROUS BODY AND METHOD FOR PRODUCING SAME - Provided are: a polyetherimide porous body which has a fine cell structure, a low relative permittivity and a high insulation breakdown voltage; and a method for producing the same. This polyetherimide porous body comprises a crosslinked body in which a polyetherimide having a specific repeated structural unit is ring-opened and crosslinked with a polyamine compound. | 12-03-2015 |
Shoji Yakuwa, Tokyo JP
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20150336138 | ULTRASONIC CLEANING APPARATUS AND ULTRASONIC CLEANING METHOD - To reduce the amount of a cleaning liquid used in cleaning an object to be cleaned. An ultrasonic cleaning apparatus, includes: an ultrasonic vibrator 11; a liquid storage part 12 provided in contact with the ultrasonic vibrator; an inflow port 12 | 11-26-2015 |
Tomohiro Yakuwa, Miyagi JP
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20090236671 | HIGH VOLTAGE-RESISTANT SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING HIGH VOLTAGE-RESISTANT SEMICONDUCTOR DEVICE - High voltage-resistant semiconductor devices adapted to control threshold voltage by utilizing threshold voltage variation caused by plasma damage resulting from the formation of multilayer wiring, and a manufacturing method thereof. Exemplary high voltage-resistant semiconductor devices include a plurality of MOS transistors having gate insulating films not less than about 350 Å in thickness on a silicon substrate, and the MOS transistors have different area ratios between gate electrode-gate insulating film contact areas and total opening areas of contacts formed on the gate electrodes. | 09-24-2009 |
20100093162 | Method of manufacturing semiconductor device - A method of manufacturing a semiconductor device wherein semiconductor elements (e.g., transistors) respectively formed in multiple independent wells have the same characteristics with the number of production process steps being reduced. A P-type well as an area of a first conductivity type is formed on a semiconductor substrate. Then, second and fourth wells as two regions of a second conductivity type are formed apart from each other in the P-type well, and a first buried well of N-type as a first buried region of the second conductivity type to connect the second and fourth wells is formed at the bottom of a third well (part of the area of the first conductivity type) sandwiched between the second and fourth wells. In this way, a triple well is formed on the semiconductor substrate. | 04-15-2010 |
20110097865 | HIGH VOLTAGE-RESISTANT SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING HIGH VOLTAGE-RESISTANT SEMICONDUCTOR DEVICE - High voltage-resistant semiconductor devices adapted to control threshold voltage by utilizing threshold voltage variation caused by plasma damage resulting from the formation of multilayer wiring, and a manufacturing method thereof. Exemplary high voltage-resistant semiconductor devices include a plurality of MOS transistors having gate insulating films not less than about 350 Å in thickness on a silicon substrate, and the MOS transistors have different area ratios between gate electrode-gate insulating film contact areas and total opening areas of contacts formed on the gate electrodes. | 04-28-2011 |
Yukinori Yakuwa, Ome-Shi JP
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20090073839 | REPRODUCTION APPARATUS AND METHOD - According to one embodiment, there is disclosed a reproduction apparatus includes a determination unit determining a preset reproduction limit level of the reproduction apparatus, a generator generating message data in accordance with the reproduction limit level, a reader reading data recorded in a recording medium, a reproduction unit reproducing data read from the reader, a detector detecting a reproduction limit level of the recording medium from data read from the reader, and a display unit comparing the reproduction limit level of the recording medium with the reproduction limit level of the reproduction apparatus, and stopping reproduction of the data of the generator in accordance with the comparison result, and further, displaying a message generated by the generator. | 03-19-2009 |
Yutaka Yakuwa, Tokyo JP
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20150365290 | NETWORK VERIFICATION APPARATUS, NETWORK VERIFICATION METHOD AND PROGRAM - A device for network verification includes a verification information input unit that accepts input of information for verification which represents definition of a configuration of a network being verified and a behavior model of a component included in the network. The device also includes a verification code formulation unit that formulates, from the information for verification, a code for verification which verifies an over approximate model which is such a model that has corrected the behavior model so that the model obtained on correction does not have to resort to match conditions identifying a communication packet. The device also includes a model check execution unit that executes model checking using the code for verification, a counterexample validity confirmation unit that checks whether a counterexample obtained in the model checking is also present in an inherent behavior of the network, and a verified result output unit that outputs result of verification based on outputs of the model check execution unit and the counterexample validity confirmation unit. | 12-17-2015 |