Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11427027 | Writing implement | Naohiko Moriya, Toshimi Kamitani | 2022-08-30 |
| 7405865 | Liquid for electrophoretic display, display medium and display device using the same | Atsushi Sato, Takahiro Osada, Takao Koyama | 2008-07-29 |
| 5965634 | Water base ink composition | Hiroyuki Idogawa, Atsushi Iwasa, Kiyokazu Sakurai | 1999-10-12 |
| 5959000 | Erasable ink | Kiyokazu Sakurai, Atsushi Iwasa | 1999-09-28 |
| 5942560 | Colored resin fine particle water base dispersion liquid for water base ink | Hiroyuki Idogawa, Atsushi Iwasa, Kiyokazu Sakurai | 1999-08-24 |
| 5621021 | Erasable writing ink composition | Koji Yoshioka, Mitsuhiko Furusawa, Kyoko Kobayashi | 1997-04-15 |