Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7090349 | Single vision lenses | Colin Maurice Perrott, Simon John Edwards, Eric F. Barkan, David H. Sklar | 2006-08-15 |
| 6902271 | Single vision lenses | Colin Maurice Perrott, Simon John Edwards, Eric F. Barkan, David H. Sklar | 2005-06-07 |
| 6698884 | Lenses and spectacles bearing lenses | Colin Maurice Perrott, Simon John Edwards | 2004-03-02 |
| 6364481 | Lens with surface correction | Anthony Miller | 2002-04-02 |
| 6361166 | Single vision lenses | Colin Maurice Perrott, Simon John Edwards, Eric F. Barkan, David H. Sklar | 2002-03-26 |
| 6334681 | Lenses and spectacles bearing lenses | Colin Maurice Perrott, Simon John Edwards | 2002-01-01 |
| 4806010 | Multifocal lens | Ronald W. Ewer, deceased, Dean G. Scott | 1989-02-21 |