Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11774783 | High performance selective light wavelength filtering providing improved contrast sensitivity | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2023-10-03 |
| 11701315 | High energy visible light filter systems with yellowness index values | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2023-07-18 |
| 10610472 | High energy visible light filter systems with yellowness index values | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2020-04-07 |
| 10551637 | High performance selective light wavelength filtering providing improved contrast sensitivity | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2020-02-04 |
| 9927635 | High performance selective light wavelength filtering providing improved contrast sensitivity | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2018-03-27 |
| 9814658 | High energy visible light filter systems with yellowness index values | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2017-11-14 |
| 9683102 | Photo-stable and thermally-stable dye compounds for selective blue light filtered optic | Dustin R. Cefalo, Jerry C. Bommer, Anita Trajkovska-Broach, Ronald D. Blum, Andrew W. Ishak | 2017-06-20 |
| 9377569 | Photochromic ophthalmic systems that selectively filter specific blue light wavelengths | Andrew W. Ishak, Joshua N. Haddock, William Kokonaski, Dwight P. Duston, Venkatramani S. Iyer +2 more | 2016-06-28 |
| 8882267 | High energy visible light filter systems with yellowness index values | Andrew W. Ishak, Ronald D. Blum, Michael B. Packard | 2014-11-11 |
| 8360574 | High performance selective light wavelength filtering providing improved contrast sensitivity | Andrew W. Ishak, Joshua N. Haddock, William Kokonaski, Dwight P. Duston, Venkatramani S. Iyer +2 more | 2013-01-29 |
| 7499219 | Optimized lens for indirect ophthalmoscopy | Steven D. Cech, Timothy D. Edwards | 2009-03-03 |
| 7014317 | Method for manufacturing multifocal lenses | Amitava Gupta, William Kokonaski, Pierre-Yves Gerligand | 2006-03-21 |
| 6203862 | Processing systems with dual ion sources | Terry Bluck, James Rogers | 2001-03-20 |