Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804247 | Quartz glass optical fiber | Shuzo Suzuki, Minoru Watanabe, Motohiro Nakahara | 1989-02-14 |
| 4804393 | Methods for producing optical fiber preform and optical fiber | Koji Yano, Minoru Watanabe, Masao Hoshikawa | 1989-02-14 |
| 4797143 | Process for the production of optical fiber preforms | Kazunori Chida, Hiroshi Yokota, Hisao Sato, Minoru Watanabe, Naoki Yoshioka | 1989-01-10 |
| 4735475 | Optical fiber including chlorine content in cladding | Minoru Watanabe | 1988-04-05 |
| 4693738 | Method for producing glass preform for optical fiber | Masao Hoshikawa, Koji Yano, Gotaro Tanaka | 1987-09-15 |
| 4664690 | Method for producing glass preform for optical fiber | Minoru Watanabe, Yoichi Ishiguro | 1987-05-12 |
| 4655808 | Method for producing glass preform for optical fiber | Yoichi Ishiguro, Hiroshi Kawauchi, Gotaro Tanaka | 1987-04-07 |
| 4610709 | Method for producing glass preform for optical fiber | Hiroshi Kawauchi | 1986-09-09 |
| 4586943 | Method for the production of glass preform for optical fibers | Naoki Yoshioka, Gotaro Tanaka, Minoru Watanabe, Hiroshi Shimba, Nobuo Inagaki | 1986-05-06 |
| 4338111 | Process for producing a glass preform for optical fiber | Takao Edahiro, Gotaro Tanaka, Toru Kuwahara | 1982-07-06 |
| 4318726 | Process for producing optical fiber preform | Takao Edahiro, Gotaro Tanaka, Toru Kuwahara | 1982-03-09 |