Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11364827 | Vehicle seat | — | 2022-06-21 |
| 10414304 | Seat | Norito Akimoto, Tsutomu HADA | 2019-09-17 |
| 6223635 | Method of forming annular grooves in a ball polishing apparatus | Katsuhisa Tonooka, Chuichi Sato, Yuichi Sumita, Shoji Jibu | 2001-05-01 |
| 6110023 | Sphere grinding apparatus | Masami Shinomoto, Katsuhisa Tonooka, Tomita Suzuki | 2000-08-29 |
| 5921851 | Sphere polisher | Tomita Suzuki, Katsuhisa Tonooka, Kunio Kawashima, Chuichi Sato, Masami Shinomoto | 1999-07-13 |
| 5913717 | Sphere polishing machine | Katsuhisa Tonooka, Takeshi Kobayashi | 1999-06-22 |
| 5906535 | Ball polishing method and apparatus, and annular groove forming method | Katsuhisa Tonooka, Chuichi Sato, Yuichi Sumita, Shoji Jibu | 1999-05-25 |