Patents by Inventor Kenji Hotehama

Kenji Hotehama 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).

  • Agent for preventing vinyl chloride polymer build-up
    Patent number: 4980079
    Abstract: An agent for preventing vinyl chloride polymer build-up, which contains as the effective ingredient a reaction product of ammonium salt or a metal salt of N-nitrosophenylhydroxylamine with an aldehyde.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: December 25, 1990
    Assignee: Sun Arrow Chemical Co., Ltd.
    Inventors: Tamio Yamato, Kenji Asada, Yutaka Miyauchi, Kenji Hotehama, Teruaki Inagi