Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944962 | Method for dirtproofing treatment for plastic lens | Shoichiro Furuta, Hirohisa Kato | 1990-07-31 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944962 | Method for dirtproofing treatment for plastic lens | Shoichiro Furuta, Hirohisa Kato | 1990-07-31 |