Patents by Inventor Takao Choh

Takao Choh 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).

  • Carbide dispersed, strengthened copper alloy
    Publication number: 20020007878
    Abstract: A carbide dispersed, strengthened copper alloy includes copper as a major constituent, carbide particles, and a dispersing agent. The carbide particles consist of one or more carbides selected from chromium carbide, tungsten carbide, molybdenum carbide, and tantalum carbide. The dispersing agent consists of one or more elements selected from magnesium, chromium, silicon, and aluminum.
    Type: Application
    Filed: August 21, 2001
    Publication date: January 24, 2002
    Applicant: Yazaki Corporation
    Inventors: Takao Choh, Hirohiko Fujimaki, Yuji Nitta, Takuya Miyakawa
  • Carbide dispersed, strengthened copper alloy
    Patent number: 6299708
    Abstract: A carbide dispersed, strengthened copper alloy includes copper as a major constituent, carbide particles, and a dispersing agent. The carbide particles consist of one or more carbides selected from chromium carbide, tungsten carbide, molybdenum carbide, and tantalum carbide. The dispersing agent consists of one or more elements selected from magnesium, chromium, silicon, and aluminum.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: October 9, 2001
    Assignee: Yazaki Corporation
    Inventors: Takao Choh, Hirohiko Fujimaki, Yuji Nitta, Takuya Miyakawa
  • Superplastic Mg-based composite material and method for production thereof
    Patent number: 5614684
    Abstract: A method for the production of a superplastic Mg-based composite material comprises preparing a composite material consisting of ceramic particles formed of at least one compound selected from among TiC, AlN, Si.sub.3 N.sub.4, and TiB.sub.2 and a matrix formed of a magnesium alloy, dispersing the ceramic particles in the matrix, hot extruding the composite material, and then hot rolling the resultant extrudate; and a superplastic Mg-based composite material produced by the method.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: March 25, 1997
    Assignee: Agency of Industrial Science and Technology, Ministry of International Trade & Industry
    Inventors: Suk-Won Lim, Tsunemichi Imai, Yoshinori Nishida, Takao Choh