Patents by Inventor Masashi Kawana

Masashi Kawana 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: 4102033
    Abstract: A method of producing layer-like clad metal materials is disclosed. The layer-like clad metal material is produced by applying an organic substance consisting mainly of carbon and hydrogen to the surface of a metallic core material having at its surface substantially no oxide film to form a coating film having a thickness of 50-3,000 .mu.m, placing said core material in a casting mold, pouring a molten metal having the same or different composition around said core material into said mold by a bottom pouring process to form a clad metal ingot, subjecting said ingot to slab rolling or forging to form an intermediate product, and then subjecting said intermediate product to a hot working and, if necessary, a cold working.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: July 25, 1978
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshihiko Emi, Masashi Kawana, Katsuo Kinoshita, Shinichiro Adachi