Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7014314 | Subsystem of producing dye base body used for dyeing of spectacle lenses and a spectacle lens dyeing system including the dye base body producing subsystem | Minoru Inuzuka, Tetsuo Yamada | 2006-03-21 |
| 6520999 | Method of dyeing plastic lens and a dyeing system used therein | Minoru Inuduka, Tetsuo Yamada | 2003-02-18 |