Inventor · disambiguated record
John S. Ligas
Also filed as: LIGAS JOHN S
8 granted patents·407 citations·filing 1991–2022
85Inventor score
Top patents by PatentIndex Score
8 records- 0198US5391327APhotochromic compositions of improved fatigue resistanceTRANSITIONS OPTICAL INC·Filed 1994·Granted Feb 21, 1995·221 cites·22 claims
- 0291US5289547AAuthenticating methodPPG INDUSTRIES INC·Filed 1991·Granted Feb 22, 1994·178 cites·20 claims
- 0378US11256014B2Optical articles and method of preparing the sameTRANSITIONS OPTICAL INC·Filed 2015·Granted Feb 22, 2022·2 cites·22 claims
- 0474US9030740B2Photochromic article having at least partially crossed polarized photochromic-dichroic and fixed-polarized layersDEMEIO RACHEL L·Filed 2012·Granted May 12, 2015·6 cites·29 claims
- 0572US12055741B2Optical articles and method of preparing the sameTRANSITIONS OPTICAL INC·Filed 2022·Granted Aug 6, 2024·0 cites·24 claims
- 0670US11714220B2Optical article with gradient light influencing properties and method of making the sameTRANSITIONS OPTICAL INC·Filed 2021·Granted Aug 1, 2023·0 cites·15 claims
- 0761US11199653B2Optical article with gradient light influencing properties and method of making the sameTRANSITIONS OPTICAL INC·Filed 2015·Granted Dec 14, 2021·0 cites·18 claims
- 0842US12076951B2Method of making optical articles having gradient light influencing propertiesTRANSITIONS OPTICAL INC·Filed 2015·Granted Sep 3, 2024·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →