Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880452 | Method for producing glass preform for optical fiber containing fluorine in cladding | Hiroo Kanamori, Gotaro Tanaka, Michihisa Kyoto, Naoki Yoshioka | 1989-11-14 |
| 4875918 | Method of manufacturing fiber preform for single-mode fibers | Takeshi Kyogoku, Tatsuo Saitoh, Shigeki Endoh | 1989-10-24 |
| 4846867 | Method for producing glass preform for optical fiber | Hiroshi Yokota, Hiroo Kanamori, Yoichi Ishiguro, Gotaro Tanaka | 1989-07-11 |