Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458034 | Game system and computer-usable information | Shinichiro Aiki | 2002-10-01 |
| 5935311 | Water-resistant ink composition and writing instrument | Kazuyuki Matsumura, Masanao Kamei, Fujio Yagihashi | 1999-08-10 |