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Santa Clara, CA, United States of America

Excel Precision Corporation

USPTO Granted Patents = 19

% Expired Patents = 31.6

Forward Citations = 163

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9 inventors (with patents filed for the assignee):

John C Tsai (19 out of 37 patents)

Hubert Song (1 out of 12 patents)

Erica Tsai (1 out of 4 patents)

4. Mao Wang (1 out of 1 patent)

5. Guang-Yao Yan (1 out of 1 patent)

6. Mervyn L Hopson (1 out of 1 patent)

7. Jean Chi (1 out of 1 patent)

8. Kam-Fung Yan (1 out of 1 patent)

9. Mervyn I Hopson (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. 7375822 - Rotation and translation measurement (2008-05-20),

2. 7224467 - System for rotation measurement with laser interferometry (2007-05-29),

3. 7196798 - Optical alignment method and apparatus (2007-03-27),

4. 7110121 - Rotation and translation measurement (2006-09-19),

5. 7025265 - Information card system (2006-04-11),

6. 6603629 - Non-contact servo track writing apparatus and method (2003-08-05),

7. 6522604 - Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unit (2003-02-18),

8. 6317200 - Positional measurement with normalized signal processing (2001-11-13),

9. 6316779 - Rotation and translation measurement with phase sensitive detection (2001-11-13),

10. 6266298 - Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unit (2001-07-24),

11. 6052186 - Dual laser system for extended heterodyne interferometry (2000-04-18),

12. 5995526 - Transverse Zeeman laser (1999-11-30),

13. 5991112 - Non-contact servotrack writing with phase sensitive detection (1999-11-23),

14. 5920392 - Environmental parameter measurement device and method for laser (1999-07-06),

15. 5774295 - Servo track writing technique (1998-06-30),

Excel Precision Corporation is a technology-driven company based in Santa Clara, California, specializing in precision engineering and advanced manufacturing solutions. The organization focuses on developing high-quality components and systems for various industries, including aerospace, defense, and telecommunications. With a commitment to innovation, Excel Precision leverages cutting-edge technologies to enhance product performance and reliability, positioning itself as a key player in the precision manufacturing sector.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

19 Patents

#173 in Santa Clara, CA

#4,095 in California

#17,123 in US

#32,623 in the World

Santa Clara, CA, United States of America

Excel Precision Corporation

Forward Citations = 163

9 inventors:

John C Tsai (19 out of 37 patents)

Hubert Song (1 out of 12 patents)

Erica Tsai (1 out of 4 patents)

4. Mao Wang (1 out of 1 patent)

5. Guang-Yao Yan (1 out of 1 patent)

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