Patents by Inventor Katutoshi Sasashita

Katutoshi Sasashita 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).

  • Photosensitive resin composition
    Patent number: 5916731
    Abstract: Provided are a photosensitive resin composition having an anionic group and a cationic group, which is characterized in that it has an anionic group content of 0.15 mole/kg or more and a cationic group content of 0.15 mole/kg or more and contains a cationic group-having polymer having a number average molecular weight of 1000 or more, and also a printing plate material to be produced by applying the composition onto a support.The composition has excellent developability with water, and this gives a flexographic printing plate having excellent durability in printing in aqueous ink and having excellent image reproducibility in flexography.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: June 29, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Shinji Tanaka, Katutoshi Sasashita, Shigetora Kashio