Patents by Inventor Kuniaki Tsumori

Kuniaki Tsumori 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).

  • Novel cationic amino resins and processes for producing the same
    Patent number: 4021484
    Abstract: Novel cationic amino resins having a weight average molecular weight of at least 400 and an amine value of 20 to 700 and processes for producing the same characterized (a) by subjecting to thermal polymerization an alicyclic conjugated polyene compound having an alicyclic ring of 5 to 7 carbon atoms and an ethylenically unsaturated amino compound at 170 to 300.degree. C.; (b) by subjecting to thermal polymerization an alicyclic conjugated polyene compound having an alicyclic ring of 5 to 7 carbon atoms and an .alpha.,.beta.-ethylenically unsaturated nitrile at 170 to 300.degree. C. to prepare a copolymer containing a nitrile group and hydrogenating the copolymer to reduce the nitrile group.
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: May 3, 1977
    Assignee: Arakawa Rinsan Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiromi Toda, Kametaro Kunimori, Kuniaki Tsumori