Patents by Inventor Masaharu Yonezawa

Masaharu Yonezawa 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 composition produced by extrusion and hot air vulcanization
    Patent number: 4260536
    Abstract: A heat vulcanizable silicone rubber composition which is capable of being extruded by an extruder and vulcanized by hot air comprising a gum, silica filler and organohydrogenpolysiloxane and as the curing catalyst a combination of an aromatic acylorganicperoxide and an alkylorganicperoxide. The advantage of the above composition is that it can be vulcanized by hot air and the cured product is not sticky.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: April 7, 1981
    Assignee: General Electric Company
    Inventors: Masaharu Yonezawa, Masayuki Hatanaka
  • Silicone rubber compositions
    Patent number: 4157426
    Abstract: Silicone rubber compositions comprising (A) a diorganopolysiloxane in which the organo substituents are 0.01 to 2 mole % vinyl groups, 0 to 10 mole % phenyl groups and the remainder is alkyl groups, (B) an organohydrogenpolysiloxane, (C) a (O) valent platinum-(III) phosphor complex and, optionally, (D) a filler. These compositions can be cured with steam. Foamable compositions comprising (A), (B), (C) and hydrophobicized wet-process silica.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: June 5, 1979
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Masayuki Hatanaka, Makoto Matsumoto, Masaharu Yonezawa
  • Silicone rubber compositions
    Patent number: 4108833
    Abstract: Silicone rubber compositions comprising (A) a diorganopolysiloxane in which the organo substituents are 0.01 to 2 mole % vinyl groups, 0 to 10 mole % phenyl groups and the remainder is alkyl groups, (B) an organohydrogenpolysiloxane, (C) a (O) valent platinum-(III) phosphor complex and, optionally, (D) a filler. These compositions can be cured with steam. Foamable composition comprising (A), (B), (C) and hydrophobicized wet-process silica.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: August 22, 1978
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Masayuki Hatanaka, Makoto Matsumoto, Masaharu Yonezawa