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For the Inventor, By the Inventor

Duarte, CA, United States of America

Pacific Scientific Company


USPTO Granted Patents = 102


Trademarks = 4

Forward Citations = 2,733

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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:
Acceleration Sensor
Fire Extinguishing System
Hybrid Stepper Motor
Fluorescent Lamp Ballast
Voltage Surge Protector
Fault Tolerant Electric Machine
Motor Control Housing
Particle Measuring System
Outdoor Lighting Control
Restraint Belt Retractor
Dimming Control
Electrical Load Management

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),
Pacific Scientific Company is a leading provider of high-quality motion control solutions for various industries. With over 70 years of experience, the company specializes in designing and manufacturing reliable components such as motors, drives, and controls. Pacific Scientific is committed to delivering innovative solutions that optimize performance, efficiency, and reliability. Their products are trusted by customers worldwide for their exceptional quality and precision.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

102 Patents

#2 in Duarte, CA

#838 in California

#3,585 in US

#7,442 in the World

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Duarte, CA, United States of America

Pacific Scientific Company

Forward Citations = 2,733

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)

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