Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864286 | Switch operation monitoring apparatus | Youichi Ohshita, Akira Hashimoto, Masanori Tsukushi, Kiyoshi Okumura | 1989-09-05 |
| 4851668 | Ion source application device | Tasunori Ohno, Tomoe Kurosawa, Tadashi Sato, Yoshimi Hakamata | 1989-07-25 |
| 4847476 | Ion source device | Tadashi Sato, Yasunori Ohno, Tomoe Kurosawa, Nobuya Sekimoto, Yoshimi Hakamata +1 more | 1989-07-11 |