Patents by Inventor Koji Tsuruga

Koji Tsuruga 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).

  • Stabilizer for chlorinated resin and stabilized chlorinated resin composition
    Patent number: 5356981
    Abstract: A stabilizer for a rigid chlorinated resin comprising a hydrotalcite compound and an inorganic copper compound and a stabilized rigid chlorinated resin composition obtained by adding said stabilizer to a chlorinated resin.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: October 18, 1994
    Assignee: Asahi Denka Kogyo Kabushiki Kaisha
    Inventors: Koji Tsuruga, Kiyotatsu Iwanami