Patents by Inventor Kenji Ohkubo

Kenji Ohkubo 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).

  • Patent number: 11952529
    Abstract: The present invention provides a refrigerant-containing composition by using a refrigerant that has a refrigerating capacity equivalent to that of widely used R404A, and a low GWP. Specifically, the present invention provides a composition that contains a refrigerant containing difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), 2,3,3,3-tetrafluropropene (R1234yf), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 9, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi Itano, Hitomi Kuroki, Shun Ohkubo, Tatsumi Tsuchiya, Kenji Gobou
  • Patent number: 11939515
    Abstract: The present disclosure provides a composition comprising a refrigerant (mixed refrigerant), the composition having three types of performance; i.e., a coefficient of performance (COP) and a refrigerating capacity (Cap) that are equivalent to or higher than those of R404A and/or R410A, and a sufficiently low GWP. The present disclosure specifically provides a composition comprising a refrigerant, the refrigerant comprising difluoromethane (HFC-32), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and at least one of 1,1-difluoroethylene (HFO-1132a) and tetrafluoroethylene (FO-1114).
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: March 26, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi Itano, Shun Ohkubo, Hitomi Kuroki, Yasufu Yamada, Tatsumi Tsuchiya, Kenji Gobou
  • Publication number: 20240076596
    Abstract: A cell culture container includes: an insert member having a membrane on which a cell is seeded, the insert member defining a first inner space that functions as an anaerobic chamber; a container having an attachment/detachment portion to and from which the insert member is attachable and detachable, the container defining a second inner space that functions as an aerobic chamber; a sealing member that closes an opening of the aerobic chamber between the attachment/detachment portion and the insert member with the insert member being attached to the attachment/detachment portion; and a transfer mechanism that transfers force to the sealing member. The sealing member closes the opening in response to an input of the force from the transfer mechanism.
    Type: Application
    Filed: October 14, 2021
    Publication date: March 7, 2024
    Inventors: Tsunehiro INOUE, Toyoyuki HASHIMOTO, Yasuko YONEDA, Kenji TAKUBO, Yoichi FUJIYAMA, Tomoki OHKUBO, Eiichi OZEKI, Ryogo TAKAI, Hiroomi GOTO, Sadamu TOMITA
  • Patent number: 11920077
    Abstract: No studies have been made regarding what kinds of refrigerants should be used in a refrigeration cycle device for a vehicle. An air conditioner (1) for a vehicle includes a refrigerant circuit (10) and a refrigerant that is sealed in the refrigerant circuit (10). The refrigerant circuit (10) includes a compressor (80), a first heat exchanger (85), which serves as a heat dissipater in a dehumidifying heating mode, an outside-air heat exchanger (82), a cooling control valve (87), and a second heat exchanger (86), which serves as an evaporator in the dehumidifying heating mode. The refrigerant is a refrigerant having a low GWP.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: March 5, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji Kumakura, Kazuhiro Furusho, Masaru Tanaka, Shun Ohkubo, Mitsushi Itano, Yuuki Yotsumoto, Akihito Mizuno, Tomoyuki Gotou, Yasufu Yamada, Tatsumi Tsuchiya, Kenji Gobou, Hitomi Kuroki, Daisuke Karube, Tatsuya Takakuwa, Tetsushi Tsuda
  • Patent number: 11912922
    Abstract: A showcase includes a refrigerant circuit and a refrigerant enclosed in the refrigerant circuit. The refrigerant circuit includes a compressor (121), a radiator (122), an expansion valve (123), and an evaporator (124). The refrigerant is a low-GWP refrigerant.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: February 27, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Shinichi Fujinaka, Masaru Tanaka, Shun Ohkubo, Mitsushi Itano, Yuuki Yotsumoto, Akihito Mizuno, Tomoyuki Gotou, Yasufu Yamada, Hitomi Kuroki, Tatsumi Tsuchiya, Kenji Gobou, Daisuke Karube, Tatsuya Takakuwa
  • Patent number: 8790549
    Abstract: An object of the present invention is to provide an electronic component using a Cu-based conductive material that can suppress oxidization even in a heat treatment in an oxidizing atmosphere and that can suppress an increase in an electrical resistance. In an electronic component having an electrode or a wiring, a ternary alloy made from three elements consisting of Cu, Al, and Co is used as a Cu-based wiring material that can prevent oxidization of the electrode or the wiring. Specifically, part or the whole of the electrode or the wiring has a chemical composition in which an Al content is 10 at % to 25 at %, a Co content is 5 at % to 20 at %, and the balance is composed of Cu and unavoidable impurities, and the chemical composition represents a ternary alloy in which two phases of a Cu solid solution formed by Al and Co being dissolved into Cu and a CoAl intermetallic compound coexist together.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: July 29, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Takahiko Kato, Takashi Naito, Hiroki Yamamoto, Takuya Aoyagi, Seiichi Watanabe, Seiji Miura, Norihito Sakaguchi, Kazuki Aoshima, Kenji Ohkubo
  • Publication number: 20120285733
    Abstract: An object of the present invention is to provide an electronic component using a Cu-based conductive material that can suppress oxidization even in a heat treatment in an oxidizing atmosphere and that can suppress an increase in an electrical resistance. In an electronic component having an electrode or a wiring, a ternary alloy made from three elements consisting of Cu, Al, and Co is used as a Cu-based wiring material that can prevent oxidization of the electrode or the wiring. Specifically, part or the whole of the electrode or the wiring has a chemical composition in which an Al content is 10 at % to 25 at %, a Co content is 5 at % to 20 at %, and the balance is composed of Cu and unavoidable impurities, and the chemical composition represents a ternary alloy in which two phases of a Cu solid solution formed by Al and Co being dissolved into Cu and a CoAl intermetallic compound coexist together.
    Type: Application
    Filed: April 8, 2010
    Publication date: November 15, 2012
    Inventors: Takahiko Kato, Takashi Naito, Hiroki Yamamoto, Takuya Aoyagi, Seiichi Watanabe, Seiji Miura, Norihito Sakaguchi, Kazuki Aoshima, Kenji Ohkubo
  • Patent number: 7523742
    Abstract: Leakage of a combustion gas is prevented by installing a seal ring in an annular groove provided in the outer peripheral surface of a fuel injection valve. Further, a combustion gas leaked from the seal ring is sealed in by providing a seal washer more on the rear end side of the fuel injection valve than the seal ring. Thus a combustion gas seal for an injection valve is provided, and the combustion gas seal is capable of exhibiting excellent sealing ability for a long term with a simple structure.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: April 28, 2009
    Assignees: Toyota Jidosha Kabushiki Kaisha, NOK Corporation
    Inventors: Tomihisa Tsuchiya, Kenji Ohkubo, Masaaki Yano, Iwao Taira, Junichi Nakayama
  • Publication number: 20070272214
    Abstract: Leakage of a combustion gas is prevented by installing a seal ring (10) in an annular groove (51) provided in the outer peripheral surface of a fuel injection valve (5). Further, a combustion gas leaked from the seal ring (10) is sealed in by providing a seal washer (11) more on the rear end side of the fuel injection valve than the seal ring (10). Thus a combustion gas seal for an injection valve is provided, and the combustion gas seal is capable of exhibiting excellent sealing ability for a long term with a simple structure.
    Type: Application
    Filed: October 22, 2004
    Publication date: November 29, 2007
    Inventors: Tomihisa Tsuchiya, Kenji Ohkubo, Masaaki Yano, Iwao Taira, Junichi Nakayama
  • Patent number: 7069908
    Abstract: An injector for directly injecting fuel into a cylinder of an internal combustion engine having a socket. The injector is provided with a nozzle insertable into the socket. An annular gap is defined between the nozzle and the socket when the nozzle is received in the socket. A first seal groove, formed in the nozzle, receives a first gas seal that seals the annular gap. A second seal groove, formed in the nozzle, receives a second gas seal that seals the annular gap. The second seal groove is formed closer to the distal end of the nozzle than the first seal groove. The depth of the second seal groove is greater than that of the first seal groove. This structure prevents the formation of deposits and maintains the sealing capability of the gas seals without lowering installation and maintenance efficiency.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: July 4, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Ohkubo, Masaaki Yano, Yukiharu Tomita
  • Patent number: 6938901
    Abstract: The invention relates to a combustion gas seal for injectors and to a seal structure disposed therewith, for preventing leakage of combustion gas in a state in which an injector is mounted to an engine head. And, the number of parts is reduced, vibration and noise are reduced, and sealing performance is improved. A tapered surface, in which an clearance between the tapered surface and an inner peripheral surface of a mounting hole of the engine head narrows from an engine bore side towards an atmospheric side, is disposed at a groove bottom of an attachment groove of the injector, and an abutment portion that abuts against the tapered surface is disposed at the combustion gas seal for injectors.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: September 6, 2005
    Assignees: Toyota Jidosha Kabushiki Kaisha, NOK Corporation
    Inventors: Tomihisa Tsuchiya, Kyosuke Ohashi, Kenji Ohkubo, Masahiro Kawabata, Junichi Nakayama, Tadashi Abiko
  • Publication number: 20050066942
    Abstract: An injector for directly injecting fuel into a cylinder of an internal combustion engine having a socket. The injector is provided with a nozzle insertable into the socket. An annular gap is defined between the nozzle and the socket when the nozzle is received in the socket. A first seal groove, formed in the nozzle, receives a first gas seal that seals the annular gap. A second seal groove, formed in the nozzle, receives a second gas seal that seals the annular gap. The second seal groove is formed closer to the distal end of the nozzle than the first seal groove. The depth of the second seal groove is greater than that of the first seal groove. This structure prevents the formation of deposits and maintains the sealing capability of the gas seals without lowering installation and maintenance efficiency.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 31, 2005
    Inventors: Kenji Ohkubo, Masaaki Yano, Yukiharu Tomita
  • Publication number: 20040080115
    Abstract: The invention relates to a combustion gas seal for injectors and to a seal structure disposed therewith, for preventing leakage of combustion gas in a state in which an injector is mounted to an engine head. And, the number of parts is reduced, vibration and noise are reduced, and sealing performance is improved. A tapered surface, in which an clearance between the tapered surface and an inner peripheral surface of a mounting hole of the engine head narrows from an engine bore side towards an atmospheric side, is disposed at a groove bottom of an attachment groove of the injector, and an abutment portion that abuts against the tapered surface is disposed at the combustion gas seal for injectors.
    Type: Application
    Filed: December 3, 2003
    Publication date: April 29, 2004
    Inventors: Tomihisa Tsuchiya, Kyosuke Ohashi, Kenji Ohkubo, Masahiro Kawabata, Junichi Nakayama, Tadashi Abiko
  • Patent number: 6073612
    Abstract: Deformation of a delivery pipe in which injectors for injecting fuel into the combustion chambers of corresponding cylinders in an internal combustion engine are accommodated, is suppressed, thereby preventing deterioration of the fuel sealing. At least two mounting portions are provided on respective lengths of the delivery pipes that extend outward from opposite ends of a length of the delivery pipe along which injector-inserting portions are disposed for accommodating the injections. This arrangement of the mounting portions prevents deformation of at least the length of the delivery pipe in which the injector-inserting portions are disposed, thereby preventing deterioration of the fuel sealing between the injectors and the injector-inserting portions of the delivery pipe which could otherwise be caused by high-pressure fuel, thermal contractions at very low temperatures, or the like.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: June 13, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Ohkubo, Masaaki Yano, Masanori Sugiyama
  • Patent number: 5636616
    Abstract: A low-pressure fuel filter is disposed in a fuel-return pipe from the fuel pressure regulator. In a portion of the fuel-return pipe between the fuel pressure regulator and a fuel element of the low-pressure fuel filter, a bypass device which includes, for example, a jet pump or an aperture may be provided so that fuel can flow back to the fuel tank, bypassing the fuel filter when the fuel filter is blocked.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: June 10, 1997
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukihiro Okane, Tomojiro Sugimoto, Kenji Ohkubo, Kazuhiro Minamitani, Takeshi Matsuda, Kazuhiro Shinomiya
  • Patent number: 5483795
    Abstract: An NO.sub.x absorber (18) is arranged in an exhaust passage of an internal combustion engine. The NO.sub.x absorber (18) absorbs the NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorber (18) is lean while releases the absorbed NO.sub.x when the air-fuel ratio of the exhaust gas flowing into the NO.sub.x absorber (18) becomes the stoichiometric air-fuel ratio or rich. An air-fuel ratio sensor (22) is arranged in the exhaust passage downstream of the NO.sub.x absorber (18). When the air-fuel ratio detected by the air-fuel ratio sensor (22) is switched from lean to rich after the air-fuel ratio of the exhaust gas flowing into NO.sub.x absorber (18) is switched from lean to rich, it is decided that the releasing action of NO.sub.x from the NO.sub.x absorber (18) is completed.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: January 16, 1996
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Katoh, Tokuta Inoue, Hidetaka Nohira, Kiyoshi Nakanishi, Satoshi Iguchi, Tetsuro Kihara, Masato Gotoh, Takamitsu Asanuma, Hiroshi Okano, Jun Harada, Shinichi Takeshima, Masahiko Sugiyama, Shigenori Sakurai, Kenji Ohkubo, Mikio Murachi
  • Patent number: 5208206
    Abstract: In a method of manufacturing an exhaust gas purifying catalyst, a carrier of heat-resistant alloy steel containing aluminum is initially prepared as a metallic carrier. A first alumina slurry containing fine particles of hydrated alumina and water is then coated on the surface of the metallic carrier and is in turn dried and calcined so that a first alumina layer may be formed on the surface of the metallic carrier. Thereafter, a second alumina slurry containing gamma-alumina particles, hydrated alumina and water is coated on the surface of the first alumina layer and is in turn dried and calcined so that a second alumina layer may be formed on the surface of the first alumina layer.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: May 4, 1993
    Assignees: Tokyo Roki Co., Ltd., Mazda Motor Corporation
    Inventors: Shigeru Yasaki, Yasutaka Yoshino, Kazunori Ihara, deceased, Kenji Ohkubo
  • Patent number: 5123063
    Abstract: An image processor employing a plurality of types of scanners including a stored table in which identification numbers allotted to the scanners and scanner control information are registered in pairs, a controller for registering the identification number of a scanner from the operator of the image processor, a controller for requesting the scanner to transmit an identification number representative of its type and receiving such identification number, a controller for setting the registered identification number as the identification number of the scanner when the scanner fails to transmit its identification number within a predetermined amount of time, a reading controller for reading from the stored table scanner control information corresponding to the identification number of the scanner, and a controller to control the scanner in a manner to conform with the scanner control information.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: June 16, 1992
    Assignee: Fuji Xero Co., Ltd.
    Inventor: Kenji Ohkubo
  • Patent number: 4949007
    Abstract: A low pressure gas discharge lamp includes a bulb with a pair of closed ends, and a pair of bases attached to the ends of the bulb, respectively. Each base has a cylindrical base body into which the end of bulb is inserted, and a pair of receiving terminals electrically connected to an electrode in the bulb and protruding from the base body in a direction perpendicular to the axis of the bulb. Each terminal has a pair of mutually parallel flat faces and is secured to the base body such that these flat faces are located on planes perpendicular to the axis of the bulb, and a part of at least one flat face is in contact with a bottom wall of the base body.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: August 14, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masami Takagi, Shinichi Tsunekawa, Kenji Ohkubo
  • Patent number: 4906891
    Abstract: A low-pressure discharge lamp includes a bulb and a pair of bases attached to the end portions of the bulb, respectively. Each base has a base body fixed to the end of the bulb and a pair of terminals attached to the periphery of the base body. The terminals have contact portions which project from the periphery of the base body and include contact surfaces extending parallel to the axis of the bulb and facing the same direction. The contact surfaces are located so as to contact a common plane.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: March 6, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masami Takagi, Shinichi Tsunekawa, Kenji Ohkubo