Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4438058 | Expanding process | — | 1984-03-20 |
| 4433588 | Clutch mechanism | Tadaaki Watanabe | 1984-02-28 |
| 4348911 | Pushbutton | Yasuhisa Nishikawa, Ryoichi Hasumi | 1982-09-14 |
| 4340361 | Apparatus for heat-treating cast iron pipes | Susumu Togawa, Akinori Sakoda | 1982-07-20 |
| 4278199 | Post card | — | 1981-07-14 |
| 4271834 | Disposable portable mask for emergency use | — | 1981-06-09 |
| 4211552 | Method for processing molten slag | Tatsuo Shibata, Tatsuo Matsuo, Tadao Takashima, Sankichi Hori | 1980-07-08 |