JL

John S. Ligas

TO Transitions Optical: 7 patents #23 of 143Top 20%
PI Ppg Industries: 1 patents #662 of 1,216Top 55%
Overall (All Time): #614,657 of 4,157,543Top 15%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12076951 Method of making optical articles having gradient light influencing properties David John Park, Delwin S. Jackson, Anil Kumar, Philip Miller, Brian Smyth 2024-09-03
12055741 Optical articles and method of preparing the same Anil Kumar, David John Park, Brian Smyth, Delwin S. Jackson, Henry Nguyen +1 more 2024-08-06
11714220 Optical article with gradient light influencing properties and method of making the same Philip Miller, Delwin S. Jackson, Anil Kumar, David John Park, Brian Smyth 2023-08-01
11256014 Optical articles and method of preparing the same Anil Kumar, David John Park, Brian Smyth, Delwin S. Jackson, Henry Nguyen +1 more 2022-02-22
11199653 Optical article with gradient light influencing properties and method of making the same Philip Miller, Delwin S. Jackson, Anil Kumar, David John Park, Brian Smyth 2021-12-14
9030740 Photochromic article having at least partially crossed polarized photochromic-dichroic and fixed-polarized layers Rachel L. DeMeio, Anil Kumar, Truman F. Wilt, Delwin S. Jackson, Henry Nguyen 2015-05-12
5391327 Photochromic compositions of improved fatigue resistance Michael S. Misura, Cletus N. Welch 1995-02-21
5289547 Authenticating method Steven Weber 1994-02-22