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Roanoke, VA, United States of America

E-Vision, LLC

USPTO Granted Patents = 49

% Expired Patents = 32.7

CIPO Patents = 2

EPO Patents = 9

Trademarks = 1

Forward Citations = 3,160

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32 inventors (with patents filed for the assignee):

Ronald D Blum (40 out of 211 patents)

William Kokonaski (34 out of 149 patents)

Dwight P Duston (23 out of 69 patents)

4. Dan Katzman (10 out of 18 patents)

5. Joshua N Haddock (7 out of 70 patents)

6. Anita Trajkovska-Broach (5 out of 12 patents)

7. Dwight P Dustin (5 out of 5 patents)

8. Venkatramani S Iyer (4 out of 27 patents)

9. Youval Katzman (4 out of 9 patents)

10. Massimo Pinazza (3 out of 20 patents)

11. Scott N Richman (3 out of 3 patents)

12. Mark Graham (3 out of 21 patents)

13. Tiziano Tabacchi (3 out of 6 patents)

14. Volkan H Ozguz (3 out of 22 patents)

15. Charles Dale Willey (3 out of 30 patents)

Core Competencies:

Electrochromic Films

Moisture-Resistant Eyewear

Electro-Active Lenses

Liquid Crystal Alignment

Optical Power Blending

Adaptive Optics

Variable Index Materials

Multi-Focal Lenses

Vision Correction

Electro-Optic Lens

Dynamic Optics

Birefringence Reduction

49 patents: Sort by Forward Citations

1. 11586057 - Moisture-resistant eye wear (2023-02-21),

2. 11473186 - Electrochromic films and related methods thereof (2022-10-18),

3. 11061252 - Hinge for electronic spectacles (2021-07-13),

4. 10838258 - Liquid crystal alignment layers and method of fabrication (2020-11-17),

5. 10761393 - Electro-chromic devices including solid or quasi-solid electrolyte layers and methods of making the same (2020-09-01),

6. 10613355 - Moisture-resistant eye wear (2020-04-07),

7. 10061175 - Electrochromic films and related methods thereof (2018-08-28),

8. 9939682 - Liquid crystal alignment layers and method of fabrication (2018-04-10),

9. 8727531 - Electro-active opthalmic lens having an optical power blending region (2014-05-20),

10. 8641191 - Static progressive surface region in optical communication with a dynamic optic (2014-02-04),

11. 8333470 - Electro-active opthalmic lens having an optical power blending region (2012-12-18),

12. 8047651 - Electro-active opthalmic lens having an optical power blending region (2011-11-01),

13. 8029134 - System, apparatus, and method for correcting vision using an electro-active lens (2011-10-04),

14. 7997733 - System, apparatus and method for correcting vision with an adaptive optic (2011-08-16),

15. 7988286 - Static progressive surface region in optical communication with a dynamic optic (2011-08-02),

Company Overview

E-Vision, LLC, based in Roanoke, VA, specializes in advanced optical technologies, focusing on moisture-resistant eyewear and innovative electrochromic films. The company is dedicated to developing cutting-edge solutions such as electro-active ophthalmic lenses and adaptive optics, enhancing visual experiences through variable index of refraction technologies. E-Vision's expertise extends to liquid crystal alignment layers and static progressive surface regions, positioning it at the forefront of the ophthalmic lens industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

49 Patents

#3 in Roanoke, VA

#116 in Virginia

#7,142 in US

#14,277 in the World

Roanoke, VA, United States of America

E-Vision, LLC

Forward Citations = 3,160

32 inventors:

Ronald D Blum (40 out of 211 patents)

William Kokonaski (34 out of 149 patents)

Dwight P Duston (23 out of 69 patents)

4. Dan Katzman (10 out of 18 patents)

5. Joshua N Haddock (7 out of 70 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: E-Vision, LLC. Retrieved from https://idiyas.com/company/e-vision

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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