Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5015523 | Coated synthetic resin lens | Hiroshi Kawashima, Takao Mogami | 1991-05-14 |
| 4525421 | Surface hard coat for a synthetic resin lens | Satoshi Kubota, Takao Mogami, Tetsuo Nakagawa | 1985-06-25 |