Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869570 | Fiber coupler and method and apparatus for manufacturing the same | Itaru Yokohama, Juichi Noda, Hiroaki Hanafusa, Yoshiaki Takeuchi, Mitsuhiro Tateda | 1989-09-26 |
| 4797143 | Process for the production of optical fiber preforms | Hiroshi Yokota, Michihisa Kyoto, Hisao Sato, Minoru Watanabe, Naoki Yoshioka | 1989-01-10 |