Patents by Inventor Senichi Yamada

Senichi Yamada 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).

  • Fibrous material for composite materials, fiber-reinforced composite materials produced therefrom, and process for producing same
    Patent number: 4961990
    Abstract: A fiber and fibrous material for producing composite materials, fiber-reinforced metals, fiber-reinforced plastics and fiber-reinforced ceramics, in which short fibers, whiskers or powders made of heat resistant material are deposited on continuous fibers made of heat resistant material.The composite materials, such as fiber-reinforced metals, plastics, and ceramics, contain the fibrous material in a matrix, and have improved control of the fiber volume ratio and mechanical characteristics. Processes for producing the fiber, fibrous materials and composite materials are also disclosed.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: October 9, 1990
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Ube Industries, Ltd.
    Inventors: Senichi Yamada, Shinichi Towata, Hajime Ikuno, Takemi Yamamura, Toshihiro Ishikawa, Masaki Shibuya
  • Fibrous material for composite materials, fiber-reinforced metal produced therefrom, and process for producing same
    Patent number: 4732779
    Abstract: The present invention relates to a fibrous material for composite materials, a fiber-reinforced metal produced therefrom, and a process for producing same. The fibrous material is composed of continuous filament fibers selected from heat resistant substances and short fibers, whiskers, or powders selected from heat resistant substances. The fiber-reinforced metal is composed of the fibrous material and a matrix metal, has a reduced anisotropy of mechanical properties, and can be made at my desired fiber volume ratio.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: March 22, 1988
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Shinichi Towata, Senichi Yamada
  • Steel having a uni-directional lamellar martensite structure in an austenite matrix
    Patent number: 4203782
    Abstract: Heat-treated steel of particular, but known, composition is quenched, worked in one direction and then hardened by tempering to form a uni-directional lamellar structure of tough martensite in a uniform austenite matrix.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: May 20, 1980
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Senichi Yamada, Yoshio Kato