Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812154 | Method for producing glass preform for optical fiber | Kiminobu Yoshida, Kazuhisa Watanabe | 1989-03-14 |
AS
Akio Shiomi
Overall (1989): #134,392 of 140,708Top 100%
1
Patents 1989