Average Co-Inventor Count = 2.10
ph-index = 26
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Transitions Optical, Inc. (29 from 213 patents)
2. Ppg Industries, Inc. (15 from 2,825 patents)
3. Ppg Industries Ohio, Inc. (7 from 1,742 patents)
4. Johnson and Johnson Vision Care, Inc. (4 from 882 patents)
5. American Cyanamid Company (2 from 3,580 patents)
57 patents:
1. 11874434 - Ophthalmic devices comprising photochromic materials with reactive substituents
2. 11256002 - Ophthalmic devices comprising photochromic materials with reactive substituents
3. 10197707 - Ophthalmic devices comprising photochromic materials with reactive sub substituents
4. 9139552 - Indeno-fused naphthopyrans having ethylenically unsaturated groups
5. 9073838 - Method of making indeno-fused naphthol materials
6. 9052438 - Ophthalmic devices comprising photochromic materials with reactive substituents
7. 9028728 - Photochromic materials that include indeno-fused naphthopyrans
8. 8765978 - Method of making indeno-fused naphthol materials
9. 7584630 - Photochromic ocular devices
10. 7560056 - Photochromic contact lenses and methods of manufacturing
11. 7556751 - Photochromic materials having electron-withdrawing substituents
12. 7556750 - Photochromic materials with reactive substituents
13. 7465415 - Photochromic materials derived from ring-opening monomers and photochromic initiators
14. 7368072 - Photochromic contact lenses and methods of manufacturing
15. 7320826 - Photochromic articles with reduced temperature dependency and methods for preparation