Patents by Inventor Keiko Tamukai

Keiko Tamukai 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).

  • Light sensitive planographic printing plate having particular deposited particles and process for producing the same
    Patent number: 5747220
    Abstract: A light sensitive planographic printing plate have deposited particles on a sensitive layer, each of the said deposited particles comprising a protuberant or bulging portion and a substantially flat base portion spreading around the said protuberant or bulging portion, the said both protuberant or bulging portion and flat base portion being formed integrally with a same material.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: May 5, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Katsuhiko Hidaka, Katsuhiro Kawabata, Keiko Tamukai