Patents by Inventor Shigenori Tajiri

Shigenori Tajiri 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).

  • Method of hydrolyzing acrylamide and methacrylamide polymers
    Patent number: 4221888
    Abstract: A process for preparing hydrolyzed acrylamide and methacrylamide polymers which comprises hydrolyzing a powdery acrylamide or methacrylamide polymer dispersed in a solvent mixture comprising water and at least one water-miscible organic solvent selected from the group consisting of ketones, nitriles, ethers and furans.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: September 9, 1980
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shigenao Kawakami, Shigenori Tajiri, Hiroshi Tashiro, Shin-ichi Isaoka