Patents by Inventor Takashi Kadowaki

Takashi Kadowaki 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).

  • Insoluble chloroprene polymer
    Patent number: 3933754
    Abstract: A toluene-insoluble gel polymer having a crosslinking density of at least 2.4 .times. 10.sup.-.sup.6 obtained by polymerizing chloroprene or a mixture of chloroprene with a small amount of at least one copolymerizable monomer to a monomer conversion of at least 80 percent in the presence of a crosslinking agent selected from the group consisting of a compound represented by the following formula: ##EQU1## wherein n is integer of from 1 to 8, ##EQU2## wherein n is integer of from 2 to 4, divinylbenzene and diallyl phthalate and a process for the preparation thereof.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: January 20, 1976
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Chojiro Kitagawa, Ichiro Fukuoka, Takashi Kadowaki, Shoji Kimura, Takehiko Nishimura, Kanehisa Hanabusa