Patents by Inventor Takeshi Katohgi

Takeshi Katohgi 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).

  • Stop-weld composition and method for producing aluminium tube in sheet utilizing the same
    Patent number: 3994753
    Abstract: A stop-weld composition for forming a corrosion inhibiting layer on the internal surface of aluminium tube in sheet comprises 2.0 to 50.0% of boron nitride, 0.2 to 10.0% of bentonite, 5.0 to 50.0% of finely divided zinc and the balance solvent.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: November 30, 1976
    Assignee: Showa Aluminium Kabushiki Kaisha
    Inventors: Tomiyoshi Kanai, Takeshi Katohgi, Hitoshi Akiyoshi