Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364428 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Akira Urano | 1994-11-15 |
| 5203899 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Akira Urano | 1993-04-20 |
| 5145507 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Akira Urano | 1992-09-08 |
| 4713107 | Apparatus for producing porous preforms for optical fibers | Masaaki Yoshida, Shigeki Endo, Shigeru Kisanuki | 1987-12-15 |
| 4225330 | Process for producing glass member | Shiro Kurosaki, Yuichi Usui | 1980-09-30 |