Patents by Inventor Hideo Nakauchi

Hideo Nakauchi 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).

  • Vibration-insulating rubber composition
    Patent number: 4391942
    Abstract: There is disclosed a rubber composition having excellent vibration-insulating properties. The rubber composition comprises 45 to 75 parts by weight of at least one rubber selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber and styrene-butadiene rubber; 40 to 20 parts by weight of halogenated butyl rubber; 5 to 15 parts by weight of copolymer having a styrene content of not less than 50%; 20 to 80 parts by weight of carbon black based on 100 parts by weight of the total of the above rubbers and copolymer; and 3 to 25 parts by weight of aromatic process oil based on 100 parts by weight of the total of the above rubbers and copolymer.
    Type: Grant
    Filed: April 6, 1982
    Date of Patent: July 5, 1983
    Assignee: Bridgestone Tire Co., Ltd.
    Inventors: Hideo Nakauchi, Shingo Kato, Yukio Ando
  • Method of producing polyurethane products having an improved flex crack resistance
    Patent number: 4086211
    Abstract: Polyurethane products having improved flex crack resistance can be obtained by curing a mixture of (a) a polyurethane prepolymer having terminal isocyanate group and (b) at least one curative selected from polyamine and polyol to prepare a polyurethane product, and heat treating the polyurethane product at a temperature of 60.degree.-180.degree. C for 1-30,000 minutes under an atmosphere having an absolute humidity of at least 2%.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: April 25, 1978
    Assignee: Bridgestone Tire Company Limited
    Inventors: Hideo Nakauchi, Toshiyuki Osaki, Kazuo Naito, Sakae Inoue