Patents by Inventor Shozo Shimbo

Shozo Shimbo 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).

  • Process for producing a water-soluble vinyl polymer
    Patent number: 4376021
    Abstract: A water-soluble vinyl polymer is produced by polymerizing a water-soluble vinyl monomer in the presence of a catalyst or under the action of ultraviolet rays to prepare a polymer having a degree of polymerization of at least 95%, adjusting the water content of the system containing said polymer to be within the range of from 15 to 30%, and irradiating said system with ionizing radiation.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: March 8, 1983
    Assignees: Japan Atomic Energy Research Institute, Taki Chemical Co. Ltd.
    Inventors: Jiro Okamoto, Isao Ishigaki, Hironobu Fukuzaki, Shozo Shimbo, Kiyoaki Yoshikawa