Patents by Inventor Kazunao Kudoh

Kazunao Kudoh 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: 5118906
    Abstract: An electric wire conductor for use in automobiles made by twisting a plurality of strands together. Each of the strands has a surface layer made of copper or a copper alloy and a core made of steel containing carbon and other elements such as Si, Mn, Ni and Cr. Also, the core may be made of an Fe-based alloy containing Ni or Cr. This structure allows a substantial reduction in the weight of conductor.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: June 2, 1992
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Kazunao Kudoh, Fukuma Sakamoto, Kazunori Tsuji
  • Patent number: 4605533
    Abstract: The present invention relates to an improvement of a packaging material for use in integrated circuits (IC) such as IC, LSI and VLSI, and in particular to an improvement of a lead frame made of iron-nickel alloys used as a material in a low-melting-point glass-ceramic package. The invention resides in provision of a lead frame faces made of an iron-nickel alloy substrate containing nickel therein at a ratio of 42 to 49% by weight and the improvement wherein an aluminium layer of 0.2 to 10 microns thick is coated on both faces and sides of the substrate.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: August 12, 1986
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazunao Kudoh, Yoshikazu Hashimoto
  • Patent number: D298231
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: October 25, 1988
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazunao Kudoh, Hitoshi Akazawa