Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845057 | Halide glass | Toshiharu Yamashita, Minoru Tokida | 1989-07-04 |
| 4806138 | Method for melting fluorophosphate glass | Tetsuro Izumitani, Toshiharu Yamashita | 1989-02-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845057 | Halide glass | Toshiharu Yamashita, Minoru Tokida | 1989-07-04 |
| 4806138 | Method for melting fluorophosphate glass | Tetsuro Izumitani, Toshiharu Yamashita | 1989-02-21 |