Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6372349 | High-resistivity carbon black | Hideyuki Hisashi, Yuuichi Sekine | 2002-04-16 |
| 5503664 | Ink compositions for ink jet printing | Yukari Sano, Junko Shimizu, Hiroko Hayashi, Kiyohiko Takemoto, Issei Kawabata | 1996-04-02 |
| 5417747 | Waterbased ink composition for ink-jet printing | Issei Kawabata, Yoshihiko Uchioki | 1995-05-23 |
| 5324349 | Ink compositions for ink jet printing | Yukari Sano, Junko Shimizu, Hiroko Hayashi, Kiyohiko Takemoto, Issei Kawabata | 1994-06-28 |