Patents by Inventor Junich Watanabe

Junich Watanabe 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).

  • Process for producing vinyl chloride copolymer
    Patent number: 4816539
    Abstract: A vinyl chloride copolymer is produced by copolymerizing vinyl chloride monomer or a monomer mixture comoposed of vinyl chloride monomer and copolymerizable monomer, with one or more than one kind of cross-linking agent selected from polyhydric alcohol diglycidyl ether diacrylate and dimethacrylate. The vinyl chloride copolymer has good moldability and can be made into moldings having good matte finish surface and also good permanent compression set resistance, creep resistance, heat resistance, and electrical properties.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: March 28, 1989
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Junich Watanabe, Tohru Yokota