Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884290 | Method of analyzing composition of optical fiber base material to be measured by radioactive rays | Ryoichi Hara, Fumihiko Abe, Hisashi Koaizawa | 1989-11-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884290 | Method of analyzing composition of optical fiber base material to be measured by radioactive rays | Ryoichi Hara, Fumihiko Abe, Hisashi Koaizawa | 1989-11-28 |