Patents by Inventor Katsuhiro Iwamura

Katsuhiro Iwamura 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).

  • Plasticizer
    Publication number: 20030139554
    Abstract: An weather resistant plasticizer. The plasticizer contains an acrylic polymer, which is obtained by polymerization at a temperature range between 180 and 350° C. The preferred weight average molecular weight of the acrylic polymer is 500 to 10,000. The preferred viscosity of the acrylic polymer is 100,000 cP or less at 25° C. It is preferred that the plasticizer has plasticizing efficiency of 30 to 150. When plasticizing a vinyl chloride resin, it is preferred that the plasticizer contains an acrylic polymer having a Q-value of 11.5 to 16. When plasticizing an ABS resin, it is preferred that the plasticizer contains an acrylic polymer having a Q-value of 13.5 to 16.
    Type: Application
    Filed: October 25, 2002
    Publication date: July 24, 2003
    Inventors: Michihiro Kaai, Madoka Furuta, Satoshi Kayamori, Hiroshi Inukai, Yasuomi Maruyama, Ryoichi Aimiya, Katsuhiro Iwamura