Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11067829 | Progressive lens optical design determining system | Trevor Steele, Patrick E. McCollum, James Clyde McCartney, George W. Foster | 2021-07-20 |
| 8287124 | Opthalmic lenses having reduced base out prism | Jeffrey P. Krall, Trevor Steele, Andrew David Whale | 2012-10-16 |
| 8042940 | Opthalmic lenses having reduced base out prism | Jeffrey P. Krall, Trevor Steele, Andrew David Whale | 2011-10-25 |
| 7033023 | Progressive addition power lens | Trevor Steele, Derek Slater Payne | 2006-04-25 |
| 6776486 | Progressive addition power lens | Trevor Steele, Derek Slater Payne | 2004-08-17 |