Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944962 | Method for dirtproofing treatment for plastic lens | Hirohisa Kato, Hirohito Seto | 1990-07-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944962 | Method for dirtproofing treatment for plastic lens | Hirohisa Kato, Hirohito Seto | 1990-07-31 |