Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804393 | Methods for producing optical fiber preform and optical fiber | Minoru Watanabe, Michihisa Kyoto, Masao Hoshikawa | 1989-02-14 |
KY
Koji Yano
Overall (1989): #85,785 of 140,708Top 65%
1
Patents 1989