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For the Inventor, By the Inventor

Duarte, CA, United States of America

Pacific Scientific Company

Calculating rank
USPTO Granted Patents = 102

% Expired Patents = 0.98


Trademarks = 2

Forward Citations = 2,760

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78 inventors (with patents filed for the assignee):

goldMedal Holger T Sommer (10 out of 10 patents)

silverMedal Elmer C Yang (9 out of 11 patents)

bronzeMedal Mark E Martich (9 out of 9 patents)

4.  Mihail S Moisin (7 out of 50 patents)

5.  Bradley A Trago (4 out of 7 patents)

6.  Richard Robert Larsen (4 out of 13 patents)

7.  Thomas Yeh (4 out of 10 patents)

8.  John A Churilla (4 out of 8 patents)

9.  John M Ossenmacher (4 out of 4 patents)

10.  Donald R Webster (3 out of 11 patents)

11.  Charles F Harrison (3 out of 11 patents)

12.  James R Hendershot (3 out of 3 patents)

13.  Thomas E Beling (3 out of 4 patents)

14.  Jeff D Walters (3 out of 20 patents)

15.  David Wells (3 out of 4 patents)


Core Competencies:
Particle Measuring System
Fluorescent Lamp
Fault Detection
Safety Harness
Electronics
Motor Control
Light Control
Magnetic Feedback
Step Motors
Voltage Surge Protection
Fire Detection
Restraint Systems

102 patents:

1. 8490487 - Acceleration sensor (2013-07-23),
2. D640588 - Seat belt connector (2011-06-28),
3. 7178604 - Fire extinguisher with means for preventing freezing at outlet (2007-02-20),
4. 6455960 - Direct drive roller motor (2002-09-24),
5. D454337 - Photo-responsive lamp switching apparatus (2002-03-13),
6. 6057613 - Hybrid stepper motor having optimized torque density (2000-05-02),
7. 6053256 - Fire extinguishing system (2000-04-25),
8. 6020661 - Injection molded motor assembly (2000-02-01),
9. 5982111 - Fluorescent lamp ballast having a resonant output stage using a split (1999-11-09),
10. 5961204 - Fluorescent lamp with globe activated dimmer switch (1999-10-05),
11. 5955841 - Ballast circuit for fluorescent lamp (1999-09-21),
12. 5940259 - Voltage surge protector for electronic circuits with semiconductor (1999-08-17),
13. 5929549 - Fault tolerant electric machine (1999-07-27),
14. 5925986 - Method and apparatus for controlling power delivered to a fluorescent (1999-07-20),
15. 5866993 - Three-way dimming ballast circuit with passive power factor correction (1999-02-02),
Company Overview
Pacific Scientific Company, based in Duarte, California, specializes in advanced particle measurement systems. The company focuses on developing innovative technologies that enhance safety and performance across various applications. Their expertise encompasses a range of core technologies, including particle measuring systems, fluorescent lamps, and fault detection mechanisms. Additionally, Pacific Scientific is involved in the design and manufacturing of safety harnesses, electronics, motor control systems, light control solutions, and magnetic feedback systems, contributing to improved operational efficiency and safety standards.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

102 Patents

#2 in Duarte, CA

#852 in California

#3,727 in US

#7,652 in the World

Duarte, CA (US)
Duarte, CA, United States of America

Pacific Scientific Company

Forward Citations = 2,760

78 inventors:

goldMedal Holger T Sommer (10 out of 10 patents)

silverMedal Elmer C Yang (9 out of 11 patents)

bronzeMedal Mark E Martich (9 out of 9 patents)

4.  Mihail S Moisin (7 out of 50 patents)

5.  Bradley A Trago (4 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pacific Scientific Company. Retrieved from https://idiyas.com/company/pacific-scientific-company

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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