Patents by Inventor Shuichiro Riku

Shuichiro Riku 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).

  • Coating composition for ink receiving layer formation improved in ink fixability and water resistance, and process for the producing the same
    Patent number: 6541567
    Abstract: To provide a coating composition for forming an ink-receiving layer which is satisfactory in the fixability and water resistance of inks in ink-jet printing and is excellent in transparency and clearness of recorded images.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: April 1, 2003
    Assignee: Takamatsu Oil & Fat Co., Ltd.
    Inventors: Shuichiro Riku, Masaru Nakatani, Hayato Nishita, Sakae Murata
  • Recording medium and image formation employing the same
    Patent number: 6528146
    Abstract: A recording medium has a base member and an ink-receiving layer containing amorphous silica provided on the base member. The ink-receiving layer comprises a lower layer and an upper layer formed successively in lamination on the base member. The lower layer contains an anionic group, and the upper layer contains a cationic group.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: March 4, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruaki Okuda, Toru Nagata, Kenji Suzuki, Hiroshi Ochiai, Mitsuo Miyasaka, Yoshinari Yasui, Shuichiro Riku
  • Recording medium and image formation employing the same
    Publication number: 20030021960
    Abstract: A recording medium has a base member and an ink-receiving layer containing amorphous silica provided on the base member. The ink-receiving layer comprises a lower layer and an upper layer formed successively in lamination on the base member. The lower layer contains an anionic group, and the upper layer contains a cationic group.
    Type: Application
    Filed: February 11, 2000
    Publication date: January 30, 2003
    Inventors: Teruaki Okuda, Toru Nagata, Kenji Suzuki, Hiroshi Ochiai, Mitsuo Miyasaka, Yoshinari Yasui, Shuichiro Riku