Patents by Inventor Hirokazu Takagi

Hirokazu Takagi 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: 20050228200
    Abstract: This invention provides a novel fluorinated ether compound represented by the following formula (I), which has a short atmospheric lifetime and which is stable under use conditions. The fluorinated ether compound of the invention is useful as a fluorinated inert medium or the like. Rf(CH2)nO(CH2)nRf ??(I) wherein Rf is a C1-10 fluorinated monovalent saturated organic group, and n is 3 or 4.
    Type: Application
    Filed: June 13, 2005
    Publication date: October 13, 2005
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kazuya Oharu, Hirokazu Takagi, Roderic Simpson
  • Patent number: 6899899
    Abstract: The present invention relates to a pharmaceutical composition useful for rapid disintegration, which comprises a sparingly soluble medicament held on a gel-forming water-soluble polymer as a solid dispersion, wherein it contains a salt substance that comprises an alkali and a weak or strong acid and has an endothermic standard enthalpy of solution or heat of solution. Since rapid disintegration of the pharmaceutical composition of the present invention and rapid dissolution of the medicament contained in the preparation can be made in the digestive tracts pH-independently, good bioavailability can be attained.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: May 31, 2005
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Hirokazu Takagi, Atsushi Kajiyama, Masahiro Yanagisawa
  • Publication number: 20050095289
    Abstract: The present invention relates to a pharmaceutical composition useful for rapid disintegration, which comprises a sparingly soluble medicament held on a gel-forming water-soluble polymer as a solid dispersion, wherein it contains a salt substance that comprises an alkali and a weak or strong acid and has an endothermic standard enthalpy of solution or heat of solution. Since rapid disintegration of the pharmaceutical composition of the present invention and rapid dissolution of the medicament contained in the preparation can be made in the digestive tracts pH-independently, good bioavailability can be attained.
    Type: Application
    Filed: November 30, 2004
    Publication date: May 5, 2005
    Inventors: Hirokazu Takagi, Atsushi Kajiyama, Masahiro Yanagisawa
  • Publication number: 20050027132
    Abstract: A process for producing hexafluoropropylene oxide, which comprises contacting a reaction product containing hexafluoropropylene oxide obtained by reacting hexafluoropropylene with oxygen, with at least one adsorbent selected from activated carbon and the following metal oxides, wherein the metal oxides are oxides of at least one metal selected from Groups 1 and 2 of the Periodic Table, Zr and Si.
    Type: Application
    Filed: February 12, 2004
    Publication date: February 3, 2005
    Applicant: Asahi Glass Company, Limited
    Inventors: Hirokazu Takagi, Kazuya Oharu, Keiichi Ohnishi
  • Publication number: 20040267053
    Abstract: The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
    Type: Application
    Filed: June 17, 2004
    Publication date: December 30, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu, Hirokazu Takagi
  • Patent number: 6803488
    Abstract: The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: October 12, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu, Hirokazu Takagi
  • Publication number: 20040169015
    Abstract: In an integrated type gas-insulated switching apparatus, a plurality of switching devices are provided. Each of switching devices includes a contact and an insulated container in which the contact is contained. The contact comprises electrodes adapted to be contacted with each other and separated therefrom. The insulated container is filled with an insulating gas. A conductive container is provided, to which the plurality of switching devices are connected, respectively. An insulated structure supports the conductive container.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 2, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sachio Muraki, Hiroshi Murase, Reiji Ohara, Akio Kobayashi, Hirokazu Takagi
  • Patent number: 6743999
    Abstract: In an integrated type gas-insulated switching apparatus, a plurality of switching devices are provided. Each of switching devices includes a contact and an insulated container in which the contact is contained. The contact comprises electrodes adapted to be contacted with each other and separated therefrom. The insulated container is filled with an insulating gas. A conductive container is provided, to which the plurality of switching devices are connected, respectively. An insulated structure supports the conductive container.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: June 1, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Sachio Muraki, Hiroshi Murase, Reiji Ohara, Akio Kobayashi, Hirokazu Takagi
  • Publication number: 20040017282
    Abstract: A vehicular forward-vision display system includes a night-vision camera for scanning a nighttime image ahead of a vehicle and a head-up display for displaying the scanned nighttime image as a virtual image on a front windshield. Luminance of the displayed image is decreased with decreasing vehicle speed. The luminance of the nighttime image is thereby decreased under a low speed where vision aid is not so necessary. This decreasing of the luminance results in giving a driver relief from botheration of being caught by the scanned image displayed on the front windshield.
    Type: Application
    Filed: May 9, 2003
    Publication date: January 29, 2004
    Inventors: Shotaro Eguchi, Hideki Senoo, Hirokazu Takagi, Yasuo Hirayama, Yoshihiko Goto
  • Patent number: 6649853
    Abstract: The present invention provides a switchgear, which can achieve miniaturization and simplification while securing high operation reliability, and excellent in assembly, operability and inspection, and further, has a compact size. A fluid pressure operating section is provided in a mechanical box arranged on a lower end portion of a support porcelain tube. Insulated operating rods are received in the support porcelain tube, and connecting mechanisms are received in a container. Switching contacts of circuit breaker and disconnecting switches and the fluid pressure operating section are connected via the connecting mechanisms and the insulated operating rods.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: November 18, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirokazu Takagi, Yoshikata Kobayashi, Fumio Nakajima, Tsutomu Tanaka, Masaharu Shimizu, Akio Kobayashi, Hiroshi Furuta
  • Publication number: 20030149309
    Abstract: The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process.
    Type: Application
    Filed: February 26, 2003
    Publication date: August 7, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Daisuke Shirakawa, Shin Tatematsu, Hirokazu Takagi
  • Patent number: 6534683
    Abstract: F(CF2)n(CH2)mNH2 is produced in high yield, while reducing the amount of by-products contained in the reaction product and preventing the reactor from corroding. Provided is a process for producing a fluorinated alkylamine compound, which comprises reacting a compound represented by F(CF2)n(CH2)mX (wherein X represents a chlorine atom, a bromine atom or an iodine atom, and n and m each independently represents an integer of at least 1) with NH3 to produce a compound represented by F(CF2)n(CH2)mNH2 (wherein n and m have the same meanings as the above), and is characterized by conducting the reaction in the presence of a reaction solvent comprising an alkanediol as an essential component.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 18, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Hirokazu Takagi, Keiichi Ohnishi
  • Publication number: 20030003146
    Abstract: The present invention relates to a pharmaceutical composition useful for rapid disintegration, which comprises a sparingly soluble medicament held on a gel-forming water-soluble polymer as a solid dispersion, wherein it contains a salt substance that comprises an alkali and a weak or strong acid and has an endothermic standard enthalpy of solution or heat of solution. Since rapid disintegration of the pharmaceutical composition of the present invention and rapid dissolution of the medicament contained in the preparation can be made in the digestive tracts pH-independently, good bioavailability can be attained.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 2, 2003
    Applicant: YAMANOUCHI PHARMACEUTICAL CO., LTD.
    Inventors: Hirokazu Takagi, Atsushi Kajiyama, Masahiro Yanagisawa
  • Publication number: 20020183557
    Abstract: F(CF2)n(CH2)mNH2 is produced in high yield, while reducing the amount of by-products contained in the reaction product and preventing the reactor from corroding. Provided is a process for producing a fluorinated alkylamine compound, which comprises reacting a compound represented by F(CF2)n(CH2)mX (wherein X represents a chlorine atom, a bromine atom or an iodine atom, and n and m each independently represents an integer of at least 1) with NH3 to produce a compound represented by F(CF2)n(CH2)mNH2 (wherein n and m have the same meanings as the above), and is characterized by conducting the reaction in the presence of a reaction solvent comprising an alkanediol as an essential component.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 5, 2002
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Hirokazu Takagi, Keiichi Ohnishi
  • Publication number: 20020066719
    Abstract: The present invention provides a switchgear, which can achieve miniaturization and simplification while securing high operation reliability, and excellent in assembly, operability and inspection, and further, has a compact size. A fluid pressure operating section is provided in a mechanical box arranged on a lower end portion of a support porcelain tube. Insulated operating rods are received in the support porcelain tube, and connecting mechanisms are received in a container. Switching contacts of circuit breaker and disconnecting switches and the fluid pressure operating section are connected via the connecting mechanisms and the insulated operating rods.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 6, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hirokazu Takagi, Yoshikata Kobayashi, Fumio Nakajima, Tsutomu Tanaka, Masaharu Shimizu, Akio Kobayashi, Hiroshi Furuta
  • Publication number: 20020053553
    Abstract: In an integrated type gas-insulated switching apparatus, a plurality of switching devices are provided. Each of switching devices includes a contact and an insulated container in which the contact is contained. The contact comprises electrodes adapted to be contacted with each other and separated therefrom. The insulated container is filled with an insulating gas. A conductive container is provided, to which the plurality of switching devices are connected, respectively. An insulated structure supports the conductive container.
    Type: Application
    Filed: November 7, 2001
    Publication date: May 9, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sachio Muraki, Hiroshi Murase, Reiji Ohara, Akio Kobayashi, Hirokazu Takagi
  • Publication number: 20020031547
    Abstract: The present invention relates to a pharmaceutical composition useful for rapid disintegration, which comprises a sparingly soluble medicament held on a gel-forming water-soluble polymer as a solid dispersion, wherein it contains a salt substance that comprises an alkali and a weak or strong acid and has an endothermic standard enthalpy of solution or heat of solution. Since rapid disintegration of the pharmaceutical composition of the present invention and rapid dissolution of the medicament contained in the preparation can be made in the digestive tracts pH-independently, good bioavailability can be attained.
    Type: Application
    Filed: June 18, 1999
    Publication date: March 14, 2002
    Applicant: YAMANOUCHI PHARMACEUTICAL CO., LTD.
    Inventors: HIROKAZU TAKAGI, ATSUSHI KAJIYAMA, MASAHIRO YANAGISAWA
  • Patent number: 5321171
    Abstract: A method for producing methyl chloride, which comprises reacting methanol and hydrogen chloride in a gas phase in the presence of a catalyst, wherein a zirconium oxide catalyst or a composite catalyst comprising at least two oxides of metals selected from the group consisting of Zr, Ti and Al, is used as the catalyst.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: June 14, 1994
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Morimoto, Shinsuke Morikawa, Hirokazu Takagi, Naoki Yoshida