Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874414 | Ion exchange processing method of glass | Yoshikazu Kaite | 1989-10-17 |
| 4801442 | Method for purifying starting materials for fabricating chalchogenide glass | Junji Nishii | 1989-01-31 |