Patents by Inventor Katsuyoshi Terao

Katsuyoshi Terao 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).

  • Pressure sensitive adhesive composition
    Patent number: 4204046
    Abstract: A pressure-sensitive adhesive composition based on liquid rubber, a cross-linking agent therefor and a tackifier, in which the liquid rubber component is a modified low molecular weight polyisoprene which is obtainable by adding 0.03 to 7 mol % of maleic anhydride or a derivative thereof, based on each isoprene monomer unit, to a low molecular weight polyisoprene having a molecular weight in the range of 10,000 to 90,000 is useful in producing a pressure-sensitive adhesive composition having very desirable tackiness, cohesive force and bonding characteristics without use of an organic solvent or with use of only a small amount of the solvent.
    Type: Grant
    Filed: January 10, 1979
    Date of Patent: May 20, 1980
    Assignee: Kuraray Company, Limited
    Inventors: Shobu Minatono, Hideo Takamatsu, Junnosuke Yamauchi, Katsuyoshi Terao
  • Pressure sensitive adhesive compositions
    Patent number: 4181635
    Abstract: A pressure-sensitive adhesive composition having excellent tackiness and improved thermal resistance comprises (A) a low molecular weight polyisoprene, which may be obtained by polymerizing isoprene monomer with the aid of a lithium-type catalyst, said polyisoprene having a cis-1,4 content of not less than 75%, a viscosity average molecular weight of 8,000 to 77,000 and an Mw/Mn value (Mw: weight average molecular weight; Mn: number average molecular weight) of 1.0 to 2.7 and (B) an elastomer.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: January 1, 1980
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideo Takamatsu, Shobu Minatono, Katsuyoshi Terao, Junnosuke Yamauchi