Issued Patents All Time
Showing 1–9 of 9 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 |
| 4750927 | Heating apparatus for drawing glass rod | Katsuzou Mukai, Tohru Kuwahara | 1988-06-14 |
| 4731103 | Method for producing glass preform for optical fiber | Gotaro Tanaka | 1988-03-15 |
| 4675040 | Method for producing glass preform for single mode optical fiber | Gotaro Tanaka, Naoki Yoshioka, Hiroo Kanamori | 1987-06-23 |
| 4668263 | Method for producing glass preform for optical fiber | Hiroshi Yokota, Gotaro Tanaka, Hiroo Kanamori, Toshio Danzuka | 1987-05-26 |
| 4666488 | Process of producing a highly pure glass tube | Gotaro Tanaka, Hiroo Kanamori | 1987-05-19 |
| 4627867 | Method for producing highly pure glass preform for optical fiber | Gotaro Tanaka, Hiroo Kanamori | 1986-12-09 |