Patents by Inventor Chiichiro Hasegawa

Chiichiro Hasegawa 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).

  • Silicone rubber composition
    Patent number: 6239205
    Abstract: A silicone rubber composition comprising about 0.05 to 10 wt % cerium oxide powder having a BET specific surface area not less than 80 m2/g and a pH value measured of a 3 wt % aqueous dispersion thereof of about pH 2 to 5.5.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: May 29, 2001
    Assignee: Dow Corning Toray Silicone Co.
    Inventors: Chiichiro Hasegawa, Junsuke Tokimatsu, Kazuhito Fujiwara
  • Silicone compositions for adhesion and method for adhering silicone rubber to a substrate
    Patent number: 4332844
    Abstract: A silicone composition prepared from an alkoxy-containing silicon compound, an organotitanate, and an organohydrogensilicon compound, optionally an organic solvent is useful for improving the adhesion between silicone rubber and a substrate.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: June 1, 1982
    Assignee: Toray Silicone Limited
    Inventors: Mitsuo Hamada, Sadami Yasuda, Chiichiro Hasegawa