Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5141205 | Nail remover | Hideo Iwai, Michiharu Obata, Yoshiyuki Okayasu | 1992-08-25 |
| 5135154 | Reusable stud welding ferrule containing boron nitride | Hiroaki Yamada | 1992-08-04 |
| 5049717 | Arc stud welding machine | Hiroaki Yamada | 1991-09-17 |
| 4370472 | Plasma expander | Toshiji Igarashi, Keiichi Nomura, Kunji Naito | 1983-01-25 |