Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11229866 | Air filter, light source device, and air filter manufacturing method | Kyoichi Murayama, Ryotaro Matui, Yasumasa Hakamata | 2022-01-25 |
| 7631572 | Ball circulating groove structure of ball nut | Hiroshi Fujita, Shinobu Saito, Shinichi Sakaida | 2009-12-15 |
| 5772910 | Method of providing lubricity to synthetic yarns to be processed for false twisting with short heater | Hisao Yamamoto | 1998-06-30 |