Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140723 | Vibration generating device and oral hygiene device using same | Tsuguo Matsui, Michihisa Sugimoto | 2000-10-31 |
| 5983689 | Lubricant for use in hot work | Akira Yorifuji, Takaaki Toyooka, Ken Shimamoto, Taro Kanayama | 1999-11-16 |
| 5859124 | Lubricant for use in hot work | Akira Yorifuji, Takaaki Toyooka, Ken Shimamoto, Taro Kanayama | 1999-01-12 |
| 5820373 | Cleaning device for periodontal pocket | Koichi Okano, Tsuguo Matsui, Michihisa Sugimoto, Takashi Morita, Tomoko Asai | 1998-10-13 |