For the Inventor, By the Inventor

Enter assignee name

Middlefield, CT, United States of America

Zygo Corporation

USPTO Granted Patents = 379

% Expired Patents = 32.7

EPO Patents = 45

Trademarks = 9

Forward Citations = 6,604

Loading Chart...

Loading Chart...

107 inventors (with patents filed for the assignee):

Peter J De Groot (120 out of 122 patents)

Henry Allen Hill (101 out of 145 patents)

Leslie Ludwig Deck (57 out of 58 patents)

4. Xavier Colonna De Lega (52 out of 52 patents)

5. Gary E Sommargren (21 out of 34 patents)

6. Jan Liesener (19 out of 19 patents)

7. Frank C Demarest (17 out of 18 patents)

8. Carl A Zanoni (17 out of 19 patents)

9. Andrew Eric Carlson (11 out of 12 patents)

10. James F Biegen (9 out of 9 patents)

11. Christopher James Evans (9 out of 9 patents)

12. Robert J Stoner (9 out of 19 patents)

13. Michael Schroeder (6 out of 6 patents)

14. Mark Davidson (6 out of 13 patents)

15. Michael Küchel (5 out of 5 patents)

Core Competencies:

Interferometry

Optical Distance Measurement

Surface Topography

Calibration

Encoder Systems

Wavelength Tunable Laser

Defect Mitigation

Non-Contact Characterization

Thin Film Structures

Lens Evaluation

Multi-Layer Stacks

Fringe-Free Imaging

379 patents: Sort by Forward Citations

1. 12644692 - Data age reduction (2026-06-02),

2. 12584726 - Interferometric method for measuring optical distance (2026-03-24),

3. 12305980 - Optical contact metrology (2025-05-20),

4. 12292274 - Interferometric lens aligner and method (2025-05-06),

5. 12104897 - Interometric optical system (2024-10-01),

6. 11966041 - Optical module (2024-04-23),

7. 11841548 - Variable-zoom imaging apparatus (2023-12-12),

8. 11605478 - Method of reducing roughness and/or defects on an optical surface and mirror formed by same (2023-03-14),

9. 11520234 - Method of mitigating defects on an optical surface and mirror formed by same (2022-12-06),

10. 11443950 - Method for figure control of optical surfaces (2022-09-13),

11. 10962348 - Method and apparatus for optimizing the optical performance of interferometers (2021-03-30),

12. 10890428 - Interferometric method and apparatus using calibration information relating a focus setting to a test object position (2021-01-12),

13. 10845251 - Wavemeter using pairs of interferometric optical cavities (2020-11-24),

14. 10591284 - Metrology of multi-layer stacks (2020-03-17),

15. 10451413 - Surface topography apparatus and method (2019-10-22),

Company Overview

Zygo Corporation, headquartered in Middlefield, Connecticut, specializes in optical metrology solutions that enhance precision in various industries. The company focuses on advanced technologies such as interferometry, optical distance measurement, and surface topography, providing essential tools for calibration and non-contact characterization. Zygo's innovations also include encoder systems and wavelength tunable lasers, aimed at improving defect mitigation and measurement accuracy in manufacturing and research applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

379 Patents

#1 in Middlefield, CT

#38 in Connecticut

#1,218 in US

#2,439 in the World

Middlefield, CT, United States of America

Zygo Corporation

Forward Citations = 6,604

107 inventors:

Peter J De Groot (120 out of 122 patents)

Henry Allen Hill (101 out of 145 patents)

Leslie Ludwig Deck (57 out of 58 patents)

4. Xavier Colonna De Lega (52 out of 52 patents)

5. Gary E Sommargren (21 out of 34 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Zygo Corporation. Retrieved from https://idiyas.com/company/zygo

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]

Loading…