Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812839 | System for controlling network activation sequence | Sumie Okada, Takashi Hatano, Yutaka Kawato, Ryoji Shimozono, Kenji Tsutsumi +2 more | 1989-03-14 |
| 4808223 | Silver/metal oxide material for electrical contacts and method of producing the same | Ryoji Ozaki, Hisaji Shinohara, Hironobu Yamamoto, Hajime Yoshida | 1989-02-28 |