Average Co-Inventor Count = 3.50
ph-index = 12
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. (14 from 216 patents)
2. International Business Machines Corporation (6 from 164,244 patents)
3. Ppg Industries Ohio, Inc. (6 from 1,743 patents)
26 patents:
1. 11084236 - Method for preparing an optical element which colors in a non-uniform linear pattern
2. 10371866 - Optical element having a coating for enhanced visibility of a mark and method for making the optical element
3. 9304330 - Experiential optical device
4. 8563213 - Methods for producing photosensitive microparticles
5. 8563212 - Methods for producing photosensitive microparticles, non-aqueous dispersions thereof and articles prepared therewith
6. 8547625 - Photochromic optical articles prepared with reversible thermochromic materials
7. 8153344 - Methods for producing photosensitive microparticles, aqueous compositions thereof and articles prepared therewith
8. 7911676 - Photochromic optical articles prepared with reversible thermochromic materials
9. 7666510 - Optical elements that include curable film-forming compositions containing blocked isocyanate adhesion promoters
10. 7666331 - Photochromic article
11. 7465415 - Photochromic materials derived from ring-opening monomers and photochromic initiators
12. 7410691 - Photochromic optical article
13. 7258437 - Photochromic multifocal optical article
14. 6998072 - Photochromic polymerizable compositions
15. 6916537 - Articles having a photochromic polymeric coating