Patents by Inventor Tatsunori Sakaguchi

Tatsunori Sakaguchi 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: 10538702
    Abstract: The present invention is a fluorescent material characterized by being represented by a composition of the following formula (1) and having a crystal lattice distortion obtained from a Williamson-Hall plot by X-ray diffraction within the range of 0.0005 to 0.0020. (Sr,Ca,M)3-xMgSi2O8:Eux??formula (1) wherein M is at least one rare earth metal elements selected from the group consisting of Sc, Y, Gd, Tb and La, and 0.01?x?0.10. Also, the present invention is a light-emitting device including the fluorescent material, and a light source that emits light by irradiating the fluorescent material with excitation light. Furthermore, the present invention is a method for producing the fluorescent material, including the steps of: obtaining an aqueous slurry of a raw material; and spray-drying the aqueous slurry with hot air at 80 to 300° C.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: January 21, 2020
    Assignee: Ube Industries, Ltd.
    Inventors: Kouichi Fukuda, Kaoru Takazaki, Jin Amagai, Toru Inagaki, Masaki Tanaka, Tatsunori Sakaguchi
  • Patent number: 10456996
    Abstract: A manufacturing method of a tank including a tubular body portion, and dome-shaped side end portions formed on both sides of the body portion, the manufacturing method includes forming a tubular compact serving as at least part of the body portion from one fiber reinforced resin sheet by winding the fiber reinforced resin sheet including reinforced fibers impregnated with thermoplastic resin is wound several times around a peripheral surface of a core from a direction perpendicular to an axial center of the core in a state where the thermoplastic resin is melted.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: October 29, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsunori Shindo, Kazunobu Ishibashi, Yoshihiro Iwano, Takashi Inoh, Kiyoshi Uzawa, Yuji Kageyama, Mami Sakaguchi, Manato Kanesaki
  • Publication number: 20170349823
    Abstract: The present invention is a fluorescent material characterized by being represented by a composition of the following formula (1) and having a crystal lattice distortion obtained from a Williamson-Hall plot by X-ray diffraction within the range of 0.0005 to 0.0020. (Sr,Ca,M)3-xMgSi2O8:Eux formula (1) wherein M is at least one rare earth metal elements selected from the group consisting of Sc, Y, Gd, Tb and La, and 0.01?x?0.10. Also, the present invention is a light-emitting device including the fluorescent material, and a light source that emits light by irradiating the fluorescent material with excitation light. Furthermore, the present invention is a method for producing the fluorescent material, including the steps of: obtaining an aqueous slurry of a raw material; and spray-drying the aqueous slurry with hot air at 80 to 300° C.
    Type: Application
    Filed: December 25, 2015
    Publication date: December 7, 2017
    Applicant: Ube Industries, Ltd.
    Inventors: Kouichi Fukuda, Kaoru Takazaki, Jin Amagai, Toru Inagaki, Masaki Tanaka, Tatsunori Sakaguchi
  • Publication number: 20170321120
    Abstract: Provided is a phosphor represented by a composition of the following formula (1), (Sra,Bab,Cac,Eux,M1d,M2e)SiOf.gMgO??formula (1) (here, M1 represents at least one group 3 element selected from Lu and Sc, M2 represents an alkali metal element selected from Li, Na, and K, and 0<a?2, 0<b?2, 0?c?2, 0.0015?d?0.045, 0?e?0.06, 0<x?0.1, 3.7?f?4.1, and 0?g?1 are satisfied). In addition, provided is a light-emitting device including the phosphor and a light source for irradiating the phosphor with excitation light to cause the phosphor to emit light.
    Type: Application
    Filed: November 4, 2015
    Publication date: November 9, 2017
    Applicant: Ube Industries, Ltd.
    Inventors: Jin Amagai, Kouichi Fukuda, Tatsunori Sakaguchi
  • Patent number: 6418260
    Abstract: An optical fiber comprising an optical fiber main body and a coat formed therearound and made from a polyimide resin obtained by using as an acid component a tetracarboxylic dianhydride having at least two benzene rings fused or bound directly or via an oxygen atom has excellent resistance to high temperature and high humidity and adhesiveness to the optical fiber main body, and useful in a sensing part in a fiber-optic sensing system comprising at least one sensing part and signal transmitting paths.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: July 9, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Komachiya, Takao Miwa, Rintaro Minamitani, Takayuki Fumino, Tatsunori Sakaguchi, Shizuhisa Watanabe
  • Patent number: 6301957
    Abstract: An on-vehicle fiber-optic cylinder pressure sensor capable of detecting the pressure within a combustion chamber with precision has an optical fiber capable of converting a change in the pressure within a combustion chamber received on its outer surface on an engine gasket into a change in the light quantity passing therethrough. A light emitting device for emitting the passed-through light; a photosenses or senses the passed-through light of which the light quantity has been changed. A converter converts the light quantity of the passed-through light into an electric signal. A reference pressure setting apparatus sets a reference electric signal. A signal processor includes an apparatus for watching a corresponding reference electric signal to the reference electric signal included in the detected electric signal.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: October 16, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Tatsunori Sakaguchi, Shizuhisa Watanabe, Hisao Sonobe, Masahiro Komachiya
  • Patent number: 5745611
    Abstract: An optical fiber pressure sensor for measuring a pressure on the basis of an optical power loss depending on a configuration change of an optical fiber comprising a luminescence device optically connected with at least an optical fiber which is constructed with a main part for propagating a light protective coating member for protecting the main part. A light intercepting device detects a light passing through the optical reflected light from the optical fiber. A bending device bends at least a part of the optical fiber according to a measured pressure. The optical fiber pressure sensor is characterized by being used when a normalization frequency V value of the optical fiber is smaller than 90% of a normalization cut-off frequency defining a single transmission mode condition of the optical fiber.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: April 28, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Komachiya, Shigeru Oho, Satoshi Shimada, Takayuki Fumino, Tatsunori Sakaguchi, Takao Sasayama
  • Patent number: 4484653
    Abstract: An automatic driving wheel change-over apparatus designed to automatically effect a change-over between two wheel drive mode and the four wheel drive mode of a vehicle in accordance with the surface conditions of a road. When the difference in speed between the front and rear wheel exceeds a predetermined value during the two wheel drive, a clutch is operated for a predetermined time TM.sub.0, and when the clutch is operated more than four times during a predetermined time TI.sub.0 which is longer than the time TM.sub.0, the clutch is operated continuously for a predetermined time TH.sub.0 which is longer than the time TM.sub.0 thereby holding the vehicle in the four wheel drive mode.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: November 27, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Horikoshi, Tatsunori Sakaguchi