Patents by Inventor Akira Sekiguchi
Akira Sekiguchi 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).
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Publication number: 20240105826Abstract: A semiconductor device of an embodiment includes a semiconductor layer, a first insulating film provided on the semiconductor layer, a first electrode film provided on the first insulating film, a second electrode film provided on the first electrode film, and a first field plate electrode provided on the second electrode film. A lower end of the first field plate electrode is located on a second surface of the first electrode film, the second surface being in contact with the second electrode film, rather than a first surface of the first electrode film, the first surface being in contact with the first insulating film.Type: ApplicationFiled: March 1, 2023Publication date: March 28, 2024Inventors: Hitoshi KOBAYASHI, Masaaki ONOMURA, Toru SUGIYAMA, Akira YOSHIOKA, Hung HUNG, Hideki SEKIGUCHI, Tetsuya OHNO, Yasuhiro ISOBE
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Publication number: 20240105563Abstract: A semiconductor device includes a nitride semiconductor element, a first diode, and a second diode; the nitride semiconductor element includes a conductive mounting bed, a semiconductor substrate formed on the mounting bed, a first nitride semiconductor layer, a second nitride semiconductor layer, a first major electrode, a second major electrode, a first gate electrode, and a second gate electrode; the first diode includes a first anode electrode electrically connected to the mounting bed, and a first cathode electrode electrically connected to the first major electrode; and the second diode includes a second anode electrode electrically connected to the mounting bed, and a second cathode electrode electrically connected to the second major electrode.Type: ApplicationFiled: March 9, 2023Publication date: March 28, 2024Inventors: Toru SUGIYAMA, Akira YOSHIOKA, Hitoshi KOBAYASHI, Hung HUNG, Yasuhiro ISOBE, Hideki SEKIGUCHI, Tetsuya OHNO, Masaaki ONOMURA
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Publication number: 20240097671Abstract: A semiconductor device includes a first transistor, a first drive circuit including a second transistor, and a second drive circuit including a third transistor. The second transistor and the third transistor are connected in series; and a connection node of the second and third transistors is connected to a gate electrode of the first transistor. The first transistor, the second transistor, and the third transistor are normally-off MOS HEMTs formed in a first substrate that includes GaN. The first drive circuit charges a parasitic capacitance of the first transistor. The second drive circuit discharges the parasitic capacitance of the first transistor.Type: ApplicationFiled: February 10, 2023Publication date: March 21, 2024Inventors: Toru SUGIYAMA, Noriaki YOSHIKAWA, Yasuhiko KURIYAMA, Akira YOSHIOKA, Hitoshi KOBAYASHI, Hung HUNG, Yasuhiro ISOBE, Tetsuya OHNO, Hideki SEKIGUCHI, Masaaki ONOMURA
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Patent number: 7685383Abstract: In a vehicular system (1) configured such that data can be transmitted and received via a data bus (4) between an engine electronic control unit (2) for controlling an engine and electronic units (3-1 to 3-n) including a data storing function, the most recent content of accumulated data stored in the engine electronic control unit (2) is stored as backup data in the electronic units (3-1 to 3-n) via the data bus (4) at an appropriate timing, and when the engine electronic control unit (2) is replaced, the necessary backup data is transferred via the data bus (4) from any of the electronic units to an engine electronic control unit (2) after replacement.Type: GrantFiled: February 3, 2005Date of Patent: March 23, 2010Assignee: Bosch CorporationInventors: Kenji Arai, Akira Sekiguchi
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Patent number: 7459032Abstract: A pressurizing forming process includes the steps of applying a higher fatty acid-based lubricant on a surface of a metallic workpiece and/or a forming surface of a forming tool, and forming, wherein a lubricating film including metallic soap is formed on a pressurized-and-contacted interface, at which the surface of the metallic workpiece and the surface of the forming tool are pressed against and are brought into contact with each other, in forming the metallic workpiece by pressurizing with the forming tool. The metallic workpiece and/or the forming tool can be heated prior to or in the forming step.Type: GrantFiled: June 12, 2002Date of Patent: December 2, 2008Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha, Tokyo Sintered Metals CorporationInventors: Mikio Kondo, Akira Sekiguchi, Naoki Miyagawa, Shigehide Takemoto, Hiroshi Okajima
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Publication number: 20080289802Abstract: A radiator includes an inlet line and an outlet line for a coolant to be cooled, and a plurality of flow passage units each being connected to the inlet and outlet lines respectively in parallel with adjacent flow passages with a space therebetween. Due to this configuration, it is possible to attain a high cooling capability with a small flow speed of the coolant, which is enabled by increasing the number of the flow passage units with respect to a certain flow rate passing through the inlet and outlet lines. This radiator can be employed for a cooling system together with a fan blowing air toward the flow passage units of the radiator, a coolant jacket for absorbing heat from a heat source such as a CPU, and a fluid pump for circulating the coolant between the coolant jacket and the radiator.Type: ApplicationFiled: October 11, 2007Publication date: November 27, 2008Inventors: Jiro Nakajima, Hitoshi Onishi, Akira Sekiguchi
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Publication number: 20070283110Abstract: In a vehicular system (1) configured such that data can be transmitted and received via a data bus (4) between an engine electronic control unit (2) for controlling an engine and electronic units (3-1 to 3-n) including a data storing function, the most recent content of accumulated data stored in the engine electronic control unit (2) is stored as backup data in the electronic units (3-1 to 3-n) via the data bus (4) at an appropriate timing, and when the engine electronic control unit (2) is replaced, the necessary backup data is transferred via the data bus (4) from any of the electronic units to an engine electronic control unit (2) after replacement.Type: ApplicationFiled: February 3, 2005Publication date: December 6, 2007Inventors: Kenji Arai, Akira Sekiguchi
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Publication number: 20070272912Abstract: Exemplary embodiments provided a conductive paste including an organic gold compound and a glass component in a solvent. When electrodes are formed on both surfaces of piezoelectric members using the conductive paste according to the invention, it is possible to improve the close adhesion property between the electrodes and the piezoelectric members eliminate ion migration, and lower electric resistances of the electrodes.Type: ApplicationFiled: May 14, 2007Publication date: November 29, 2007Applicant: Alps Electric Co., Ltd.Inventors: Hitoshi Onishi, Satoshi Yamada, Akira Sekiguchi
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Patent number: 7178922Abstract: A lamp has a deformed lamp reflector and a lamp front glass. The deformed lamp reflector is made by deforming an ellipsoid of revolution of a conventional lamp reflector into an aspherical reflection surface rotationally symmetrical with respect to an optical axis. The lamp front glass is obtained by deforming at least one of an incident surface and outgoing surface of a conventional lamp front glass into an aspherical lens surface rotationally symmetrical with respect to the optical axis. A light flux emitted from the center point of an illuminant is reflected by the deformed lamp reflector, and output with a uniform density through all of the outgoing surface of the lamp front lens so that the light flux is condensed at focus point.Type: GrantFiled: July 8, 2005Date of Patent: February 20, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akira Sekiguchi, Tomohiro Sasagawa, Yoshiyuki Goto, Kohei Teramoto, Tetsuo Sato
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Patent number: 6997565Abstract: A lamp has a deformed lamp reflector and a lamp front glass. The deformed lamp reflector is formed by deforming a paraboloid of revolution of a conventional lamp reflector to an aspherical reflection surface which is rotationally symmetrical with respect to an optical axis. The lamp front glass is obtained by deforming the incident plane of a conventional lamp front glass to an aspherical lens surface rotationally symmetric with respect to the optical axis. A light flux radiated from the center point of the light source of an illuminant is reflected by the deformed lamp reflector, and is output through the lens as a parallel light flux having a circular cross section equal in area to the lens.Type: GrantFiled: July 30, 2003Date of Patent: February 14, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akira Sekiguchi, Tomohiro Sasagawa, Junichi Nishimae, Yoshiyuki Goto, Kohei Teramoto
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Publication number: 20050243572Abstract: A lamp has a deformed lamp reflector and a lamp front glass. The deformed lamp reflector is made by deforming an ellipsoid of revolution of a conventional lamp reflector into an aspherical reflection surface rotationally symmetrical with respect to an optical axis. The lamp front glass is obtained by deforming at least one of an incident surface and outgoing surface of a conventional lamp front glass into an aspherical lens surface rotationally symmetrical with respect to the optical axis. A light flux emitted from the center point of an illuminant is reflected by the deformed lamp reflector, and output with a uniform density through all of the outgoing surface of the lamp front lens so that the light flux is condensed at focus point.Type: ApplicationFiled: July 8, 2005Publication date: November 3, 2005Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Akira Sekiguchi, Tomohiro Sasagawa, Yoshiyuki Goto, Kohei Teramoto, Tetsuo Sato
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Patent number: 6846080Abstract: An image display apparatus includes a plurality of light emission sources, a drive circuit for pulse-driving the plurality of light emission sources in order in a predetermined period, a moving reflecting mirror for swinging in order in an incidence direction of light from each of the light emission sources in response to the pulse driving timing of each of the light emission sources and reflecting light beams from the light emission sources in order approximately in the same direction, and a combining optical system for guiding the light reflected by the moving reflecting mirror into a light valve.Type: GrantFiled: August 7, 2003Date of Patent: January 25, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yoko Inoue, Teruo Fujita, Yoshiyuki Goto, Akira Sekiguchi
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Publication number: 20040252512Abstract: A lamp has a hybrid lamp reflector and a hybrid lamp front lens. In the reflector, an area outside of a boundary line with includes a lamp reflector having the shape of a paraboloid of revolution, and an area from the boundary line to an optical axis includes a lamp reflector having the shape of an aspherical revolution. The hybrid lamp front lens outputs light fluxes emitted from an arc discharge and reflected by the hybrid lamp reflector parallel to the optical axis.Type: ApplicationFiled: January 13, 2004Publication date: December 16, 2004Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Akira Sekiguchi, Tomohiro Sasagawa, Tetsuo Sato, Yoshiyuki Goto, Kohei Teramoto
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Patent number: 6799852Abstract: An image display projector includes a lens element for focusing a light beam from a lamp light source, a reflecting mirror for reflecting a light beam emitted from the lens element, an elliptical mirror for reflecting a light beam emitted from the reflecting mirror, a light valve for modulating a light beam reflected by the elliptical mirror, thereby forming an image light, and a projection lens for projecting the image light onto a screen. In this image display projector, a light focusing point, where the light beam emitted from the lens element is focused, is symmetric to one of the two focal points of the elliptical mirror with respect to the reflecting mirror, and the center of an entry pupil of the projection lens is symmetric to the second focal point of the elliptical mirror with respect to the light valve.Type: GrantFiled: September 30, 2003Date of Patent: October 5, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akira Sekiguchi, Hidehiko Hori
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Patent number: 6724546Abstract: Lengths of both sides of each end plane of a light-intensity distribution uniformizing element receiving a light flux and having an F-number of 1 are set to ½ of those of a reflecting surface of a reflecting optical-spatial modulator element, position information of uniformed light fluxes output from the light-intensity distribution uniformizing element is Fourier-transformed into diverging angle information indicated by incident light fluxes output from a first group of lenses, a relay deformed diaphragm intercepts an interference component of each incident light flux, which is expected to interfere with an outgoing light flux, to produce asymmetric light fluxes, the asymmetric light fluxes are incident on the reflecting optical-spatial modulator element, a projection lens deformed diaphragm removes stray light from outgoing light fluxes output from the reflecting optical-spatial modulator element, and an image is displayed according to the outgoing light fluxes.Type: GrantFiled: October 10, 2002Date of Patent: April 20, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Junichi Nishimae, Akira Sekiguchi, Tomohiro Sasagawa, Yoshiyuki Goto, Kohei Teramoto, Hiroyuki Kawano, Tatsuki Okamoto, Yukio Satou, Atsuhiro Sono
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Publication number: 20040070735Abstract: A lamp (1) has a deformed lamp reflector (1b) and a lamp front glass (1c). The deformed lamp reflector (1b) is made by deforming an ellipsoidal of revolution of a conventional lamp reflector (10b) to an aspherical reflection surface rotationally symmetric with respect to an optical axis Z. The lamp front glass (1c) is obtained by deforming at least one of incident plane and outgoing plane of a conventional lamp front glass (101c) to an aspherical lens surface rotationally symmetric with respect to the optical axis Z. A light flux emitted from the center point (Pf) of the illuminant (1a) is reflected by the deformed lamp reflector (1b), and outputted with a uniform density through the entire of the outgoing plane of the lamp front lens (1c) so that the light flux is condensed at the focus point.Type: ApplicationFiled: October 3, 2003Publication date: April 15, 2004Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Akira Sekiguchi, Tomohiro Sasagawa, Junichi Nishimae, Yoshiyuki Goto, Kohei Teramoto
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Publication number: 20040070738Abstract: An image display projector includes a lens element for focusing a light beam from a lamp light source, a reflecting mirror for reflecting a light beam emitted from the lens element, an elliptical mirror for reflecting a light beam emitted from the reflecting mirror, a light valve for modulating a light beam reflected by the elliptical mirror, thereby forming an image light, and a projection lens for projecting the image light onto a screen. In this image display projector, a light focusing point, where the light beam emitted from the lens element is focused, is symmetric to one of the two focal points of the elliptical mirror with respect to the reflecting mirror, and the center of an entry pupil of the projection lens is symmetric to the second focal point of the elliptical mirror with respect to the light valve.Type: ApplicationFiled: September 30, 2003Publication date: April 15, 2004Inventors: Akira Sekiguchi, Hidehiko Hori
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Publication number: 20040041744Abstract: An image display apparatus includes a plurality of light emission sources, a drive circuit for pulse-driving the plurality of light emission sources in order in a predetermined period, a moving reflecting mirror for swinging in order in an incidence direction of light from each of the light emission sources in response to the pulse driving timing of each of the light emission sources and reflecting light beams from the light emission sources in order approximately in the same direction, and a combining optical system for guiding the light reflected by the moving reflecting mirror into a light valve.Type: ApplicationFiled: August 7, 2003Publication date: March 4, 2004Inventors: Yoko Inoue, Teruo Fujita, Yoshiyuki Goto, Akira Sekiguchi
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Publication number: 20040021827Abstract: A lamp has a deformed lamp reflector (1b) and a lamp front glass (1c). The deformed lamp reflector (1b) is formed by deforming a paraboloid of revolution of a conventional lamp reflector (101b) to an aspherical reflection surface which is rotationally symmetric symmetrical with respect to an optical axis Z. The lamp front glass (1c) is obtained by deforming the incident plane of a conventional lamp front glass (101c) to an aspherical lens surface rotationally symmetric with respect to the optical axis Z. A light flux irradiated radiated from the center point Pf of the light source of an illuminant (1a) is reflected by the deformed lamp reflector (1b), and is output through the lens (1c) as a parallel light flux having a circular cross section equal in area to the outgoing plane of the lens (1c).Type: ApplicationFiled: July 30, 2003Publication date: February 5, 2004Inventors: Akira Sekiguchi, Tomohiro Sasagawa, Junichi Nishimae, Yoshiyuki Goto, Kohei Teramoto
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Patent number: D587578Type: GrantFiled: November 14, 2007Date of Patent: March 3, 2009Assignee: Fuji Seal International, inc.Inventors: Tetuo Yanase, Akira Sekiguchi, Takeshi Kyogane, Masahiro Kaminaga