Patents by Inventor Koji Nakamura

Koji Nakamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20040178759
    Abstract: A temperature sensor (33) detects the temperature of a MOS transistor (7), and a current detecting circuit (35) detects current flowing in the MOS transistor (7). When the voltage corresponding to the detected temperature or the voltage corresponding to the detected current is increased to a threshold value or more, an overheat state detecting signal and further switching signal is set to a high level. As a result, a switch circuit in a driving circuit (17) is turned on, and the gate resistance value becomes the parallel value of a resistor (25), and the PWM frequency in the PWM control circuit is lowered, whereby the switching loss of the MOS transistor (7) can be reduced under the state that the motor (2) is rotated.
    Type: Application
    Filed: February 26, 2004
    Publication date: September 16, 2004
    Inventors: Koji Nakamura, Manabu Nomura, Satoshi Yoshimura
  • Patent number: 6789576
    Abstract: Disclosed is an accumulator comprising a cylindrical shell including a cylindrical portion, a partitioning member for partitioning the interior of the shell into a hydraulic chamber and a gas chamber, and a port including a hydraulic fluid flow path for communicating the exterior of the shell and the hydraulic chamber. The variation of the pressure of a hydraulic fluid flowing into the hydraulic chamber is accommodated by expansion and compression of a gas in the gas chamber according to expansion and contraction of the partitioning member. The port is approximately airtightly inserted into the cylindrical portion of the shell, and is welded to an outer circumference of the cylindrical portion by means of welding.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: September 14, 2004
    Assignee: NHK Spring Co., Ltd
    Inventors: Chiharu Umetsu, Koji Nakamura, Hiroshi Mizukami, Koichiro Yamada
  • Publication number: 20040170875
    Abstract: An electronic apparatus system of this invention includes an electronic apparatus, and a fuel cell unit which is detachable from the electronic apparatus. The fuel cell unit incorporates a DMFC that can produce electricity by chemical reaction, and a rechargeable secondary battery. The fuel cell unit has a function of informing the electronic apparatus of the states of the DMFC and secondary battery incorporated in it as state information. The electronic apparatus has a function of executing its operation control on the basis of the state information sent from the fuel cell unit.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 2, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiro Ozeki, Koji Nakamura
  • Patent number: 6780502
    Abstract: This invention relates to an insulating resin composition which exhibits high impact resistance and heat resistance and good adhesiveness to the plating metal, is selectively etchable by a permanganate salt commonly used in a plating operation and suited for an insulating layer in multilayer wiring boards. The insulating resin composition is a photo-polymerizable or thermally polymerizable resin composition comprising 3-10 parts by weight of a crosslinked elastic polymer per 100 parts by weight of a resin component (excluding the crosslinked elastic poly and including monomers) and said crosslinked elastic polymer has carboxyl groups and is dispersed with an average secondary particle diameter in the range of 0.5-2 &mgr;m.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: August 24, 2004
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Shinji Inaba, Koji Nakamura, Koichi Fujishiro, Kazuhiko Mizuuchi
  • Publication number: 20040135371
    Abstract: A fuel pipe joint having excellent fuel permeation resistance, particularly a fuel pipe joint for use in automobiles, which can greatly reduce the amount of fuel permeated through the wall and exhibits excellent rigidity and fuel barrier property even at high temperatures, the fuel pipe joint using a joint material comprising a polyamide (nylon 9T) consisting of a dicarboxylic acid component and a diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine. The joint material preferably further comprises a reinforcement and/or an electrically conducting filler. The electrically conducting filler preferably has an aspect ratio of 50 or more and a short diameter of 0.5 nm to 10 &mgr;m.
    Type: Application
    Filed: October 14, 2003
    Publication date: July 15, 2004
    Applicants: Kuraray Co., Ltd., a Japanese corporation, Ube Industries, Ltd., a Japanese corporation
    Inventors: Haruhisa Masuda, Yuji Munesawa, Koichi Warino, Noriyuki Isobe, Hideki Fujimura, Yoshiro Iwata, Koji Nakamura, Kozo Tamura
  • Publication number: 20040126523
    Abstract: A multi-layer structure excellent in the barrier properties against alcohol gasoline, particularly hydrocarbon components, and also excellent in the interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance is provided. The stractive is a multi-layer structure comprising two or more layers including at least a layer (a) comprising (A) nylon 11 and/or nylon 12 and a layer (b) comprising (B) a polyamide resin (nylon 9T) consisting of a dicarboxylic acid component and a-diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine, and preferably further including a layer (c) comprising (A) nylon 11 and/or nylon 12 or (C) nylon 6.
    Type: Application
    Filed: October 14, 2003
    Publication date: July 1, 2004
    Applicants: Kuraray Co., Ltd., a Japanese Corporation, Ube Industries, Ltd., a Japanese Corporation
    Inventors: Haruhisa Masuda, Yuji Munesawa, Koichi Warino, Tomoharu Nishioka, Yoshiro Iwata, Koji Nakamura, Kozo Tamura, Tetsuya Hara
  • Publication number: 20040107339
    Abstract: A peak shift/cut control program is a program for carrying out a system environment setting changeover control, and properly changes a profile in accordance with each time zone of profile B collectively managing system environment setting items. A user interface section sets time zone corresponding to each profile. A time acquire section periodically acquires system time from an internal clock section of an operating system, and transfers the system time to a profile changeover section. The profile changeover section carries out profile changeover control in accordance with time zone set by the user interface section while receiving the system time from the time acquire section.
    Type: Application
    Filed: November 19, 2003
    Publication date: June 3, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshikazu Morisawa, Satoru Arai, Koji Nakamura, Hideaki Andoh, Kei Sakamoto
  • Publication number: 20040085045
    Abstract: An electronic device includes a battery, a control unit having the first mode in which the battery is charged up to a fully charged state and the second mode in which the battery is charged up to a state less charged than the fully charged state, a unit which detects that the battery has been charged up to the fully charged state in the first mode, and a unit which switches control of the control unit from the first mode to the second mode when the battery is detected to have been charged up to the fully charged state.
    Type: Application
    Filed: July 16, 2003
    Publication date: May 6, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Koji Nakamura
  • Patent number: 6710872
    Abstract: A system for spectrometry includes an input device, a measuring device with a spectrophotometer, a calculating device and an output device for outputting results of calculations by the calculating device. The input device allows a user to input target wavelengths at which spectrometric measurements are to be carried out, character arrays representing variables assigned to measured values which are to be stored, and character arrays representing calculation formulas created according to specified rules. The measuring device serves to measure a sample spectrometrically with the spectrophotometer to obtain measured values at the inputted target wavelengths. The calculating device analyzes the character arrays representing the calculating formulas and carries out calculations of the calculating formulas by replacing any of the character arrays representing the variables, if contained in the calculating formulas, each by corresponding one of the measured values.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: March 23, 2004
    Assignee: Shimadzu Corporation
    Inventors: Koji Nakamura, Fumiko Osumi, Hidetsugu Matsushita
  • Patent number: 6702792
    Abstract: A face mask folded and having one or more knob portions projecting outward, is characterized in that a cellulose nonwoven fabric with a basis weight of below 60 g/m2 is used as a main sheet base material. The nonwoven fabric is reinforced by mixing synthetic fibers or by superimposing on one side or interposing a film. The nonwoven fabric has an elongation percentage of 30% or less at a tensile stress of 3.9 N/5 cm when being wetted, and a relative bending resistance of 5 mN·cm or less. The face mask is impregnated with a facial pack lotion, the viscosity of which is within the range of 0.5 to 10 Pa·sec, in an amount of 50% by weight or more based on the sheet base material.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: March 9, 2004
    Inventors: Kenji Nakamura, Koji Nakamura
  • Publication number: 20040027105
    Abstract: A drive apparatus for driving two motors by PWM control of respective switching elements connected to the motors, whereby respective control signals are applied to the switching elements such that each commencement of a transition of one of the switching elements from the non-conducting to the conducting state coincides with the termination of a transition of the other switching element from the conducting to the non-conducting state, thereby reducing generated electrical noise, and for supplying equivalent values of drive voltage to two motors of different power ratings which rotate respective cooling fans, to obtain equalized levels of air flow rate.
    Type: Application
    Filed: August 8, 2003
    Publication date: February 12, 2004
    Inventors: Koji Nakamura, Satoshi Yoshimura, Takuya Usami
  • Publication number: 20040022830
    Abstract: A face mask folded and having one or more knob portions projecting outward, is characterized in that a cellulose nonwoven fabric with a basis weight of below 60 g/m2 is used as a main sheet base material. The nonwoven fabric is reinforced by mixing synthetic fibers or by superimposing on one side or interposing a film. The nonwoven fabric has an elongation percentage of 30% or less at a tensile stress of 3.9 N/5 cm when being wetted, and a relative bending resistance of 5 mN·cm or less. The face mask is impregnated with a facial pack lotion, the viscosity of which is within the range of 0.5 to 10 Pa·sec, in an amount of 50% by weight or more based on the sheet base material.
    Type: Application
    Filed: November 6, 2002
    Publication date: February 5, 2004
    Inventors: Kenji Nakamura, Koji Nakamura
  • Publication number: 20040011281
    Abstract: This invention provides a method for manufacturing a semiconductor using a wafer carrier: the temperature of a wafer can be uniformed and the uniformity within the surface excels with few differences of the composition distribution; a crystal is grown by forming a plurality of grooves to uniform the temperature of the wafer surface by diffusing heat, at the bottom of a wafer pocket to mount a wafer on a wafer carrier inside a crystal growth apparatus chamber; and the groove depth is deeper at the peripheral part of the wafer than at the central part thereof while the groove density is higher at the peripheral part of the wafer than at the central part thereof.
    Type: Application
    Filed: June 2, 2003
    Publication date: January 22, 2004
    Inventor: Koji Nakamura
  • Patent number: 6678302
    Abstract: A semiconductor device, which includes a first region having an optical waveguide layer and a second region having a light receiving layer receiving a light from the first region, that improves an intensity of the light from the light receiving layer, and a manufacturing method thereof. An active layer, a cladding layer and a contact layer in a selective growth region of a laser forming region are formed thicker than an absorptive layer, the cladding layer and the contact layer in a modulator forming region A ridge part in the laser forming region therefore has a height greater than that in the modulator forming region, Also in the ridge part, a width of contact surface of the cladding layer with the absorptive layer is greater than a width of contact surface of the cladding layer with the active layer.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: January 13, 2004
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Koji Nakamura
  • Patent number: 6653594
    Abstract: A gas having an arc current-voltage property that is different from a shielding gas is intermittently added to the shielding gas, an arc current is intermittently changed in proportion to an intermittent chemical composition change of the shielding gas at an arc generation region, and an arc generation point situated at a tip of a welding wire is displaced upwardly or downwardly along a groove of a base metal.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: November 25, 2003
    Assignees: Japan as represented by Director General of Ministry of Education, Culture, Sports, Science and Technology National Research Institute for Metals, Daihen Corporation, Nippon Sanso Corporation, Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Terumi Nakamura, Kazuo Hiraoka, Chiaki Shiga, Hideyuki Yamamoto, Koji Nakamura
  • Publication number: 20030157176
    Abstract: The present invention is an antimicrobially-treated material which has a coloring preventing function and is in contact with water or moisture or contains water, comprising (A) a silver-based antimicrobial agent which dissociates silver ions in the water system and (B) a silver ion trapping agent for trapping silver ions comprising one or more kinds of compounds selected from the group consisting of purine bases, pyrimidine bases, thiabendazole, and potassium iodide, wherein a ratio of(A)/(B) is 1/1 to 100/1 by weight.
    Type: Application
    Filed: September 10, 2002
    Publication date: August 21, 2003
    Inventors: Kenji Nakamura, Koji Nakamura
  • Patent number: 6604531
    Abstract: Natural bristles (animal hairs) are submerged in a solution containing at least one or more kinds of cationic surfactants selected from alkyl ammonium salts containing a quaternary nitrogen or alkylbenzyl ammonium salts containing a quaternary nitrogen, and alkylpyridinium salts to adsorb the cationic surfactants onto the natural bristles in an amount of 0.2-5% by weight by treating with heat, and a hair brush is produced using these natural bristles.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: August 12, 2003
    Inventors: Kenji Nakamura, Koji Nakamura
  • Patent number: 6603454
    Abstract: A matrix-display panel such as a liquid crystal display panel is composed of row and column electrodes and liquid crystal interposed between both row and column electrodes. Pixels formed at each intersection of the electrodes are driven by imposing composite voltages consisting of scanning voltages supplied to the row electrodes and image data voltages supplied to the column electrodes. Pixels aligned along one row electrode are alternately connected to two or three neighboring row electrodes in a zigzag manner, and an interlaced scanning is performed by jumping one or two row electrodes at a time, thereby reducing a flicker frequency to an invisible level and making a line-scroll invisible. The pixels may be driven by switching a transistor connected to each pixel.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: August 5, 2003
    Assignee: Denso Corporation
    Inventors: Koji Nakamura, Yoshihiro Tsubaki
  • Patent number: 6595402
    Abstract: A groove shape and an inspection method capable of securely recognizing existence of a weld flaw of a single butt weld zone by a nondestructive inspection, such as a radiograph test or an ultrasonic test, are provided. A groove shape where a concave portion 5 is formed on a butt surface 1b and a butt surface 2b of pipes 1, 2 which are weldments to be welded is prepared and the weld zone welded by single butt welding is inspected by a nondestructive inspection such as a radiograph test or an ultrasonic test.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: July 22, 2003
    Assignee: Nippon Sanso Corporation
    Inventors: Koji Nakamura, Yutaka Kimura
  • Publication number: 20030091844
    Abstract: This invention relates to an insulating resin composition which exhibits high impact resistance and heat resistance and good adhesiveness to the plating metal, is selectively etchable by a permanganate salt commonly used in a plating operation and suited for an insulating layer in multilayer wiring boards. The insulating resin composition is a photo polymerizable or thermally polymerizable resin composition comprising 3-10 parts by weight of a crosslinked elastic polymer per 100 parts by weight of a resin component (excluding the crosslinked elastic poly and including monomers) and said crosslinked elastic polymer has carboxyl groups and is dispersed with an average secondary particle diameter in the range of 0.5-2 &mgr;m.
    Type: Application
    Filed: October 2, 2002
    Publication date: May 15, 2003
    Inventors: Shinji Inaba, Koji Nakamura, Koichi Fujishiro, Kazuhiko Mizuuchi