Patents by Inventor Michimasa Hoshiba

Michimasa Hoshiba 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).

  • Hydrogenated resin and compositions containing the same
    Patent number: 4010130
    Abstract: A hydrogenated copolymer of a cyclopentadiene and an ethylenically unsaturated ester having a softening point of up to 150.degree. C, an iodine value of 0 to 50, a saponification value of 4 to 330, a number average molecular weight of 200 to 800 and a ratio of weight average molecular weight to number average molecular weight of 1 to 2.5; and a hotmelt composition and pressure sensitive adhesive composition containing the above hydrogenated copolymer as a tackifier.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: March 1, 1977
    Assignee: Arakawa Rinsan Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kotaro Matsuo, Katsuhisa Shimizu, Michimasa Hoshiba, Machio Chihara