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Trademarks = 5

Forward Citations = 104

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10 inventors (with patents filed for the assignee):

James E Millerd (9 out of 20 patents)

Neal Brock (3 out of 5 patents)

John Hayes (3 out of 3 patents)

4. James C Wyant (3 out of 8 patents)

5. Michael North-Morris (2 out of 3 patents)

6. Erik Novak (1 out of 17 patents)

7. Brad Kimbrough (1 out of 3 patents)

8. Michael North Morris (1 out of 2 patents)

9. Brian S Medower (1 out of 1 patent)

10. Larry Denneau, Jr (1 out of 2 patents)

11 patents: Sort by Forward Citations

1. 9857169 - Single-step interferometric radius-of-curvature measurements utilizing short-coherence sources (2018-01-02),

2. 9746316 - High-resolution in-line metrology for roll-to-roll processing operations (2017-08-29),

3. 8351048 - Linear-carrier phase-mask interferometer (2013-01-08),

4. 8345258 - Synchronous frequency-shift mechanism in fizeau interferometer (2013-01-01),

5. 7777895 - Linear-carrier phase-mask interferometer (2010-08-17),

6. 7675628 - Synchronous frequency-shift mechanism in Fizeau interferometer (2010-03-09),

7. 7580135 - Chromatic compensation in Fizeau interferometer (2009-08-25),

8. 7230718 - Simultaneous phase-shifting fizeau interferometer (2007-06-12),

9. 7230717 - Pixelated phase-mask interferometer (2007-06-12),

10. 7079251 - Calibration and error correction in multi-channel imaging (2006-07-18),

11. 7057737 - Common optical-path testing of high-numerical-aperture wavefronts (2006-06-06),

4D Technology Corporation is a leading provider of optical metrology solutions for advanced research, aerospace, defense, and industrial applications. Their cutting-edge technology enables high-precision measurement of surface topography, wavefront, and 3D shape for a wide range of applications. With a strong focus on innovation and customer satisfaction, 4D Technology Corporation continues to push the boundaries of optical metrology.

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USPTO Data Jan 1 1976 - Dec 30 2025

11 Patents

#56 in Tucson, AZ

#340 in Arizona

#26,747 in US

#50,241 in the World

Tucson, AZ, United States of America

4d Technology Corporation