Patents by Inventor Tohru Hirano

Tohru Hirano 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: 4997708
    Abstract: A novel metal/polymer base functionally gradient material comprising silver and a fluororesin in which the composition of silver and the fluororesin is continuously changed from one side to the other.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: March 5, 1991
    Assignees: Science and Technology Agency, Daikin Industries Ltd.
    Inventors: Shogi Kawachi, Hirofumi Nishibayashi, Tohru Hirano, Junichi Teraki, Masayuki Niino
  • Patent number: 4778649
    Abstract: A method of producing a material having a layer of ceramic as a first component, a layer of a metal as a second component and an intermediate layer lying between said layers and including said first and second components in continuous gradient ratios so that the properties of the material may change continuous, including a step of forming said intermediate layer by igniting a powder mixture of metallic and nonmetallic constitutive elements of said ceramic component and said metal component so as to cause a synthetic reaction in the powder mixture.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: October 18, 1988
    Assignees: Agency of Industrial Science and Technology, Daikin Industries, Ltd.
    Inventors: Masayuki Niino, Nobuyuki Yatsuyanagi, Jun Ikeuchi, Nobuhiro Sata, Tohru Hirano, Kanichiro Sumiyoshi
  • Patent number: 4751099
    Abstract: The present invention relates to a method of producing a functionally grant material whose components and structure are continuously adjusted by the coating, plating and powder metallurgy techniques to change its function in turn and provide a method of producing a functionally gradient material superior in heat-resistance, corrosion-resistance and resistance to thermal fatigue by distributing a third component having a lower Young's modulus or formed of high-strength material sufficiently durable to the fracture strength among ceramics as a first component and metals or other ceramics as a second component to change the function.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: June 14, 1988
    Assignees: National Aerospace Laboratories of Science and Technology Agency, Toshio Hirai, Ryuzo Watanabe, Daikin Industries, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Masayuki Niino, Akio Suzuki, Toshio Hirai, Ryuzo Watanabe, Tohru Hirano, Nobuhito Kuroishi