Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832721 | Method of fabricating optical fiber base material | Nobuhito Uchiyama, Yasuhiro Shibayama | 1989-05-23 |
| 4813989 | Apparatus for fabricating optical fiber preform | Nobuhito Uchiyama, Yasuhiro Shibayama, Shigeo Takagi, Sakae Katano | 1989-03-21 |
| 4798563 | Self-contained type automatic belt tensioner | Yoshio Okabe, Yukimori Kobayashi, Makoto Ishikawa, Tomiaki Atsumi | 1989-01-17 |