Patents by Inventor Shichiro Kawada

Shichiro Kawada 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).

  • Dielectric ethylene copolymer compositions containing alkylfluoranthene
    Patent number: 3985938
    Abstract: Ethylene copolymer compositions having excellent dielectric properties comprising an alkylfluoranthene having the following formula: ##SPC1##(wherein R represents an alkyl group containing from 1 to 4 carbon atoms, and x is an integer of from 1 to 4, and when x is an integer of 2 or greater, R may be different or the same) in an amount of at least 0.5 parts by weight per 100 parts by weight of an ethylene copolymer.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: October 12, 1976
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaaki Takahashi, Akira Ito, Yuriko Igarashi, Shichiro Kawada, Jiro Ogura, Ryoichi Ito
  • Dielectric polyolefin compositions
    Patent number: 3933772
    Abstract: Polyolefin compositions having excellent dielectric properties comprising an alkylpyrene having the following formula ##SPC1##(wherein R represents an alkyl group containing from 1 to 4 carbon atoms, and x is an integer of from 1 to 4, and when x is an integer of 2 or greater, R may be different or the same) in an amount of at last 0.5 parts by weight per 100 parts by weight of a polyolefin.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: January 20, 1976
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaaki Takahashi, Akira Ito, Yuriko Igarashi, Shichiro Kawada, Jiro Ogura, Ryoichi Ito