Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149362 | Contact forming material for a vacuum interrupter | Tsutomu Okutomi, Atsushi Yamamoto, Seishi Chiba, Tsuneyo Seki, Mikio Okawa +3 more | 1992-09-22 |
| 5045281 | Contact forming material for a vacuum interrupter | Tsutomu Okutomi, Mikio Okawa, Atsushi Yamamoto, Tsuneyo Seki, Mitsutaka Honma +2 more | 1991-09-03 |