Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852958 | Optical matrix switch having optimized crosstalk characteristics and uniform optical output intensity | Hideaki Okuyama, Shigehiro Kusumoto, Keisuke Watanabe | 1989-08-01 |
| 4846542 | Optical switch matrix | Hideaki Okayama, Akio Matoba, Nobuo Kobayashi, Issei Asabayashi, Ryoko Shibuya | 1989-07-11 |