Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8393966 | Game system and storage medium storing game program | Yoichi Yamada | 2013-03-12 |
| 7635305 | Game system and storage medium storing game program | Yoichi Yamada | 2009-12-22 |
| 7618325 | Game apparatus and storage medium storing game program | Yoichi Yamada | 2009-11-17 |
| 7467998 | Puzzle game apparatus, storage medium storing puzzle game program, and puzzle game controlling method | Yoichi Yamada | 2008-12-23 |
| 6368551 | Method for preparation of sintered permanent magnet | Shigenobu Sekine, Yuko Kawasaki, Yoshiki Kuwabara, Hiroji Sato, Kazushi Suzuki +4 more | 2002-04-09 |
| 5942053 | Composition for permanent magnet | Shigenobu Sekine, Hiroji Sato | 1999-08-24 |