Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804393 | Methods for producing optical fiber preform and optical fiber | Koji Yano, Minoru Watanabe, Michihisa Kyoto | 1989-02-14 |
MH
Masao Hoshikawa
Overall (1989): #81,110 of 140,708Top 60%
1
Patents 1989