Patents by Inventor Takeo Kondoh

Takeo Kondoh 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).

  • Rubbery polymer composition
    Patent number: 4517348
    Abstract: A rubbery polymer composition comprises a crosslinked copolymer comprising the following components.Type I15 to 40 wt. parts of a vinyl carboxylate having the formula (I);60 to 85 wt. parts of an alkoxyalkyl acrylate having the formula (II);0 to 15 wt. parts of ethylene; (100 wt. parts of a total of said three components);0 to 5 wt. parts of the components having the formula (III), (IV) or (V):Type II15 to 55 wt. parts of a vinyl carboxylate having the formula (I);5 to 20 wt. parts of ethylene; an alkyl acrylate having the formula (II');an alkoxyalkyl acrylate having the formula (II) (100 wt. parts of a total of said four components and more than 0.8 of a ratio of the alkoxyalkyl acrylate (II) to the alkyl acrylate (II') by weight);0 to 5 wt. parts of the components having the formula (III), (IV) or (V):RCOO--CH.dbd.CH.sub.2 (I)wherein R represents a C.sub.1-4 alkyl group.CH.sub.2 .dbd.CHCOO--R.sub.1 --O--R.sub.2 (II)wherein R.sub.1 represents a C.sub.1-4 alkylene group; andR.sub.2 represents a C.sub.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: May 14, 1985
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kohki Takahashi, Takeo Kondoh, Masao Koga, Kenichiro Nishiwaki
  • Rubbery polymer composition
    Patent number: 4303560
    Abstract: A rubbery polymer composition comprises a crosslinked copolymer comprising the following components.Type I15 to 40 wt. parts of a vinyl carboxylate having the formula (I); 60 to 85 wt. parts of an alkoxyalkyl acrylate having the formula (II); 0 to 15 wt. parts of ethylene; (100 wt. parts of a total of said three components); 0 to 5 wt. parts of the components having the formula (III), (IV) or (V):Type II15 to 55 wt. parts of a vinyl carboxylate having the formula (I); 5 to 20 wt. parts of ethylene; an alkyl acrylate having the formula (II'); an alkoxyalkyl acrylate having the formula (II) (100 wt. parts of a total of said four components and more than 0.8 of a ratio of the alkoxyalkyl acrylate (II) to the alkyl acrylate (II') by weight); 0 to 5 wt. parts of the components having the formula (III), (IV) or (V):(I): RCOO--CH.dbd.CH.sub.2wherein R represents a C.sub.1-4 alkyl group.(II): CH.sub.2 .dbd.CHCOO--R.sub.1 --O--R.sub.2wherein R.sub.1 represents a C.sub.1-4 alkylene group; and R.sub.2 represents a C.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: December 1, 1981
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kohki Takahashi, Takeo Kondoh, Masao Koga, Kenichiro Nishiwaki