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For the Inventor, By the Inventor

Tuam, Ireland

Transitions Optical, Inc.


USPTO Granted Patents = 220

% Expired Patents = 2.7



Trademarks = 12

Forward Citations = 4,174

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158 inventors (with patents filed for the assignee):

goldMedal Anil Kumar (118 out of 194 patents)

silverMedal Meng He (51 out of 64 patents)

bronzeMedal Barry Van Gemert (29 out of 57 patents)

4.  David B Knowles (26 out of 63 patents)

5.  Anu Chopra (25 out of 34 patents)

6.  Robert W Walters (21 out of 62 patents)

7.  Darrin R Dabideen (21 out of 22 patents)

8.  Peter C Foller (20 out of 41 patents)

9.  Forrest R Blackburn (18 out of 31 patents)

10.  Terry A Kellar, Ii (18 out of 25 patents)

11.  Wenjing Xiao (15 out of 23 patents)

12.  Jiping Shao (15 out of 28 patents)

13.  David John Park (14 out of 14 patents)

14.  Kevin J Stewart (14 out of 26 patents)

15.  Ruisong Xu (13 out of 13 patents)


Core Competencies:
Photochromic Compounds
Curable Compositions
Optical Articles
Ophthalmic Lenses
Dichroic Materials
Gradient Properties
Ultraviolet Curing
Alignment Polymers
Fused Ring Compounds
Photoalignment Materials
Customization Systems
Optical Characteristics

220 patents:

1. 12742037 - Curable photochromic composition (2026-09-22),
2. 12703712 - Indenonaphthopyrans having trialkylsilyl and ethylenically unsaturated groups (2026-08-11),
3. 12570787 - Curable compositions and articles prepared therefrom (2026-03-10),
4. 12528262 - System for marking a coated ophthalmic lens (2026-01-20),
5. 12504568 - Photochromic-dichroic articles (2025-12-23),
6. 12503543 - Curable photochromic polycarbodiimide compositions (2025-12-23),
7. 12492343 - Mesogen compounds (2025-12-09),
8. 12404448 - Dihydroquinoline photochromic compounds (2025-09-02),
9. 12360401 - Photochromic film laminate (2025-07-15),
10. 12344617 - Indolonaphthopyrans (2025-07-01),
11. 12319862 - Method for preparing a coated article (2025-06-03),
12. 12304991 - Photochromic article (2025-05-20),
13. 12271426 - Method, system, and computer program product for generating a customized photochromic optical article recommendation (2025-04-08),
14. 12247168 - Curable photochromic compositions including an oxazoline functional material (2025-03-11),
15. 12247035 - Articles comprising indolenaphthopyrans (2025-03-11),
Transitions Optical, Inc., based in Tuam, Ireland, specializes in the development and manufacturing of advanced photochromic materials. The company focuses on creating innovative optical articles, including ophthalmic lenses that adapt to varying light conditions. Their core technologies encompass photochromic compounds, curable compositions, and alignment polymers, which enhance the performance and functionality of eyewear. With a commitment to research in dichroic materials and gradient properties, Transitions Optical continues to lead in the field of adaptive lens technology.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Transitions Optical, Inc.
220 Patents

#1 in Tuam

#14 in Ireland

#3,880 in the World

Tuam, IE
Tuam, Ireland

Transitions Optical, Inc.

Forward Citations = 4,174

158 inventors:

goldMedal Anil Kumar (118 out of 194 patents)

silverMedal Meng He (51 out of 64 patents)

bronzeMedal Barry Van Gemert (29 out of 57 patents)

4.  David B Knowles (26 out of 63 patents)

5.  Anu Chopra (25 out of 34 patents)

Please report any incorrect information to [email protected]
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