Patents by Inventor Hiroshi Nakajima

Hiroshi Nakajima 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).

  • Heavy wall steel material having superior weldability and method for producing the same
    Publication number: 20050178482
    Abstract: A tough high strength heavy wall steel material having superior weldability is provided, said steel material has a diameter or a side 5 mm or more in length, and comprises oxides 1 ?m or less in particle diameter homogeneously dispersed at a dispersion density in a range of from 10,000 to 100,000 particles/mm2 and uniform ferrite grains 2 ?m or less in grain diameter formed over the entire plane making a right angle with respect to the rolling direction.
    Type: Application
    Filed: April 8, 2005
    Publication date: August 18, 2005
    Inventors: Hiroshi Nakajima, Shiro Torizuka, Kaneaki Tsuzaki, Kotobu Nagai
  • Nitride semiconductor device and method of manufacturing the same
    Patent number: 6921673
    Abstract: Provided is a nitride semiconductor device with high reliability and high flexibility in design and manufacture of the device. The nitride semiconductor device comprises a seed crystal portion (11) formed on a sapphire substrate (10) and having a mask (12) on one side surface thereof, and a GaN layer (15) grown on the sapphire substrate (10) and the seed crystal portion (11) through epitaxial lateral overgrowth. The GaN layer (15) is grown only from an exposed side surface of the seed crystal portion (11) which is not covered with the mask (12), so the lateral growth of the GaN layer (15) is asymmetrically carried out. Thereby, a meeting portion (32) is formed in the vicinity of a boundary between the seed crystal portion (11) and the mask (12) in a thickness direction of the GaN layer (15).
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: July 26, 2005
    Assignee: Sony Corporation
    Inventors: Toshimasa Kobayashi, Katsunori Yanashima, Takashi Yamaguchi, Hiroshi Nakajima
  • Gallium nitride semiconductor device and method of producing the same
    Publication number: 20050145856
    Abstract: The present invention provides a gallium nitride semiconductor device including an electrode composed of a metallic film on an underlying gallium nitride compound semiconductor layer. The gallium nitride semiconductor device is characterized in that recessed portions are present dispersely over the whole surface area of the underlying compound semiconductor layer in contact with the electrode metallic film in such a manner that at least two recessed portions having a depth greater than the lattice constant of crystals constituting the underlying compound semiconductor layer are present on a width direction line in any 1 ?m width region of the whole surface area.
    Type: Application
    Filed: January 28, 2005
    Publication date: July 7, 2005
    Inventors: Tsunenori Asatsuma, Hiroshi Nakajima, Osamu Goto, Tsuyoshi Tojo
  • Semiconductor laser light emitting device
    Publication number: 20050147144
    Abstract: Disclosed is a semiconductor laser light emitting device including: a stacked film composed of a stack of group III nitride semiconductor films each containing at least one kind selected from aluminum, gallium, indium, and boron; wherein an upper portion of the stacked film is formed into a ridge-like stripe, to form a current injection region; a current non-injection region formed on both sides of the ridge-like stripe; and at least part of the current non-injection region is made from a material expressed by a chemical formula AlxGa1-xN (0?x?1.0). In this device, the component ratio “x” of Al is specified at a value in a range of 0.3?x?1.0, so that the semiconductor laser light emitting device is configured as an index guide type semiconductor laser light emitting device; the component ratio “x” of Al is specified at a value in a range of 0.15<x<0.
    Type: Application
    Filed: March 7, 2005
    Publication date: July 7, 2005
    Inventors: Hiroshi Yoshida, Misuzu Abe, Maho Ohara, Takashi Yamaguchi, Hiroshi Nakajima
  • Electrical actuator system and vehicle air conditioner using the same
    Publication number: 20050134210
    Abstract: In a vehicle air conditioner with an electrical actuator system, a transmission mechanism transmits a rotation force of an electrical motor to an air mixing door when first and second pulse signals are generated from first and second brushes in a door operation region of a pattern plate. In contrast, the transmission mechanism stops the transmission of the rotation force to the air mixing door, when the first and second pulse signals are generated in the first and second brushes in an initialization region. Therefore, in the initialization region, the detection position of the air mixing door is the same regardless of a rotation direction of the electrical motor. As a result, even when the initialization region is arranged at a middle position in the door operation region, the rotation position of the air mixing door can be accurately detected.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 23, 2005
    Inventor: Hiroshi Nakajima
  • Motor housing
    Publication number: 20050134129
    Abstract: In a motor housing, an upper case and lower case are engaged with each other in the upward and downward direction at the respective engaging portions, and a motor etc. is accommodated in the housing. At a lower end portion of the outer surface of the upper case, an umbrella-shaped portion is protruded laterally, and a gap is provided between the umbrella-shaped portion and the side of the lower case. At a lower end portion of the umbrella-shaped portion, a dripping end portion, from which water drips down, is formed at a lower position than that of the lower face of the lower case. Thereby, water, which has dripped down on the outer surface of the upper case to the dripping end portion, cannot move to the engaging end portion side formed on the side of the lower case. Accordingly, the intrusion of water can be prevented.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 23, 2005
    Inventors: Hiroyuki Sato, Hiroshi Nakajima, Katsuji Kuwada
  • Reconfigurable circuit, processor having reconfigurable circuit, method of determining functions of logic circuits in reconfigurable circuit, method of generating circuit, and circuit
    Publication number: 20050134308
    Abstract: A reconfigurable circuit of reduced circuit scale. The reconfigurable circuit of the present invention comprises a plurality of ALUs capable of changing functions. The plurality of ALUs are arranged in a matrix. At least one connection unit capable of establishing connection between the ALUs selectively is provided between the stages of the ALUs. This connection unit is not intended to allow connection between all the logic circuits in adjoining stages, but is configured so that the logic circuits are each connectable with only some of the logic circuits pertaining to the other stages. The connection limitation allows a reduction in circuit scale.
    Type: Application
    Filed: December 21, 2004
    Publication date: June 23, 2005
    Inventors: Makoto Okada, Tatsuo Hiramatsu, Hiroshi Nakajima, Makoto Ozone
  • Semiconductor laser light emitting device
    Patent number: 6865203
    Abstract: Disclosed is a semiconductor laser light emitting device including: a stacked film composed of a stack of group III nitride semiconductor films each containing at least one kind selected from aluminum, gallium, indium, and boron; wherein an upper portion of the stacked film is formed into a ridge-like stripe, to form a current injection region; a current non-injection region formed on both sides of the ridge-like stripe; and at least part of the current non-injection region is made from a material expressed by a chemical formula AlxGa1-xN (0?x?1.0). In this device, the component ratio “x” of Al is specified at a value in a range of 0.3?x?1.0, so that the semiconductor laser light emitting device is configured as an index guide type semiconductor laser light emitting device; the component ratio “x” of Al is specified at a value in a range of 0.15<x<0.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: March 8, 2005
    Assignee: Sony Corporation
    Inventors: Hiroshi Yoshida, Misuzu Abe, Maho Ohara, Takashi Yamaguchi, Hiroshi Nakajima
  • Electric double layer capacitor
    Publication number: 20050041371
    Abstract: An electric double layer capacitor comprises a pair of polarizable electrodes impregnated with an electrolytic solution comprising an organic solvent and a supporting electrolyte dissolved in the organic solvent, and a gasket comprising a fluororesin. The organic solvent comprises propylene carbonate (PC), and the fluororesin for the gasket comprises a tetrafluoroethylene-perfluoroalkylvinylether copolymer (PFA).
    Type: Application
    Filed: August 13, 2004
    Publication date: February 24, 2005
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Yohei Kawata, Hiroshi Nakajima
  • Connecting structure of air duct of vehicular air conditioning unit
    Patent number: 6857681
    Abstract: In a connecting structure of an air duct of a vehicular air conditioning unit, an end of the air duct is engaged with an air conditioning case when an instrument panel is mounted on a vehicle body with the air duct. Therefore, a sealing member such as packing is not required between the connecting portions of the end of the air duct and an air outlet port of the case.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: February 22, 2005
    Assignee: DENSO Corporation
    Inventor: Hiroshi Nakajima
  • Electric actuator system
    Publication number: 20050012480
    Abstract: The detection of a pulse signal in an initialization pattern is ensured regardless of the position where a DC motor is stopped. A CPU detects the pulse signal generated by the pulse generator and an angle of rotation of a rotating shaft, and controls an angle of rotation of a rotating shaft based on the detected angle of rotation. The pulse generator generates the pulse signal in the initialization pattern, which indicates the position of origin of the angle of rotation, in accordance with the rotation of the DC motor. If a determination means determines that it is impossible to detect the pulse signal in the initialization pattern when the DC motor is rotated in a first direction, the CPU rotates the DC motor in a second direction.
    Type: Application
    Filed: July 15, 2004
    Publication date: January 20, 2005
    Inventors: Tokuhisa Takeuchi, Hiroshi Nakajima
  • Battery polymeric material, battery separator, battery insulating packing, and lithium battery
    Publication number: 20050010026
    Abstract: A lithium battery employs for a battery separator and a battery insulating packing and the like a battery polymeric material comprising repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group and a sulfonyl group, or a polymeric material comprising at least two types of repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group, a sulfonyl group, sulfur and a carbonyloxy group.
    Type: Application
    Filed: August 4, 2004
    Publication date: January 13, 2005
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino, Nobuhiro Nishiguchi, Masahiro Imanishi
  • Battery polymeric material, battery separator, battery insulating packing, and lithium battery
    Patent number: 6818735
    Abstract: A lithium battery employs for a battery separator and a battery insulating packing and the like a battery polymeric material comprising repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group and a sulfonyl group, or a polymeric material comprising at least two types of repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group, a sulfonyl group, sulfur and a carbonyloxy group.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: November 16, 2004
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino, Nobuhiro Nishiguchi, Masahiro Imanishi
  • Microorganism-collecting chip, microorganism-collecting kit, method of quantifying microorganisms, specimen for confirming normal state of microorganism-quantifying apparatus and microorganism-quantifying apparatus
    Publication number: 20040219628
    Abstract: The invention aims to efficiently collect microorganisms from a test sample and accurately detect and quantify the collected microorganisms.
    Type: Application
    Filed: January 30, 2004
    Publication date: November 4, 2004
    Inventors: Yoshikazu Tashiro, Tomonori Shimakita, Akinori Kinugawa, Hachirou Sasai, Hiroshi Nakajima, Yoshihisa Kobayashi, Tomoyuki Makise
  • Method for restenosis following coronary vessel intervention
    Patent number: 6790635
    Abstract: The present invention provides a method for predicting restenosis following coronary intervention by measuring human lipocalin-type prostaglandin D synthase (L-PGDS) in a body fluid sample. More particularly, this method comprises measuring the L-PGDS concentration in the sample and predicting restenosis following coronary intervention by using a change therein as an indicator.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: September 14, 2004
    Assignees: Maruha Corporation, Japan Science and Technology Corporation, Osaka Bioscience Institute
    Inventors: Kosuke Seiki, Hiroshi Oda, Hiroshi Nakajima, Nobuyuki Sato, Yoshihiro Urade, Yoshio Uehara, Teruo Inoue
  • Aluminum or aluminum alloy-based lithium secondary battery
    Patent number: 6780543
    Abstract: A first lithium secondary battery of the present invention is formed by placing at least a positive electrode, a negative electrode, and a non-aqueous electrolyte in a battery case in which a positive electrode connecting member to which the positive electrode is connected and a negative electrode connecting member to which the negative electrode is connected are electrically separated, wherein said positive electrode connecting member is composed of clad material comprising one of aluminum or aluminum alloy and one of austenitic stainless steel or ferrite stainless steel, and the aluminum or aluminum alloy in the clad material is in the positive electrode side.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: August 24, 2004
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino
  • Pattern collation apparatus
    Publication number: 20040151352
    Abstract: In a pattern collation apparatus which collates a registration pattern with a collation pattern, a first collation section executes collation between the registration pattern and the collation pattern on the basis of the correlation value between the patterns. A second collation section executes collation between the registration pattern and the collation pattern on the basis of a feature parameter defined in advance. A collation determination section determines that the registration pattern coincides with the collation pattern by using at least one of the collation results by the first and second collation sections.
    Type: Application
    Filed: November 21, 2003
    Publication date: August 5, 2004
    Inventors: Hiroshi Nakajima, Koji Kobayashi
  • Vehicle air conditioning apparatus
    Publication number: 20040129010
    Abstract: A vehicle air conditioning apparatus for a vehicle comprises an air conditioning unit for conditioning air in a passenger compartment of a vehicle. The air conditioning unit has an air conditioning case forming an air passage with at least one sidewall. The sidewall of the air conditioning case is divided into a plurality of partial sidewalls, the thicknesses of which are different, so as to restrain vibration of the air conditioning case. The air conditioning apparatus further characterized in that the air conditioning case is installed at one of a front part and a rear part of the passenger compartment of the vehicle. The thicknesses of adjoining two of the partial sidewalls are different correspondingly to vibration restriction performance of the sidewall of the air conditioning case.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 8, 2004
    Inventor: Hiroshi Nakajima
  • Nitride semiconductor growing process
    Patent number: 6730611
    Abstract: A process of growing a nitride semiconductor on a crystalline nitride semiconductor substrate is disclosed, which is carried out by heating the substrate and initiating supply of source gases onto a surface of the substrate before the substrate temperature exceeds 1200° C., to initiate growth of the nitride semiconductor on the substrate. The nitride semiconductor growth is initiated after the substrate temperature has reached 300° C., and also after supply of a nitrogen source gas has been initiated and before the substrate temperature exceeds 1200° C.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: May 4, 2004
    Assignee: Sony Corporation
    Inventors: Katsunori Yanashima, Hiroshi Nakajima
  • Gallium nitride semiconductor device and method of producing the same
    Publication number: 20040056267
    Abstract: The present invention provides a gallium nitride semiconductor device including an electrode composed of a metallic film on an underlying gallium nitride compound semiconductor layer. The gallium nitride semiconductor device is characterized in that recessed portions are present dispersely over the whole surface area of the underlying compound semiconductor layer in contact with the electrode metallic film in such a manner that at least two recessed portions having a depth greater than the lattice constant of crystals constituting the underlying compound semiconductor layer are present on a width direction line in any 1 &mgr;m width region of the whole surface area.
    Type: Application
    Filed: May 27, 2003
    Publication date: March 25, 2004
    Inventors: Tsunenori Asatsuma, Hiroshi Nakajima, Osamu Goto, Tsuyoshi Tojo