Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871230 | Single mode phosphate laser glass fiber | Sho Amano, Hidemi Tajima, Isao Masuda, Tetsuro Izumitani | 1989-10-03 |
| 4845057 | Halide glass | Kiyotaka Miura, Minoru Tokida | 1989-07-04 |
| 4806138 | Method for melting fluorophosphate glass | Kiyotaka Miura, Tetsuro Izumitani | 1989-02-21 |