For the Inventor, By the Inventor

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Santa Clara, CA, United States of America

Active Power, Inc.

USPTO Granted Patents = 44

EPO Patents = 1

Trademarks = 4

Forward Citations = 1,095

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35 inventors (with patents filed for the assignee):

Joseph F Pinkerton (28 out of 103 patents)

David B Clifton (12 out of 18 patents)

David E Perkins (10 out of 11 patents)

4. James A Andrews (6 out of 19 patents)

5. David A Badger (5 out of 34 patents)

6. Robert S Hudson (5 out of 9 patents)

7. Scott R Little (5 out of 10 patents)

8. Karl Thomas Schuetze (4 out of 5 patents)

9. David J Beatty (3 out of 12 patents)

10. Donald M Hudson (2 out of 2 patents)

11. Gail Roberts (2 out of 3 patents)

12. William D Batton (2 out of 2 patents)

13. James Arnold Keck (1 out of 3 patents)

14. Randal A Lee (1 out of 24 patents)

15. Richard Greer (1 out of 1 patent)

Core Competencies:

Uninterruptible Power Supply

Energy Storage Systems

Thermal Storage Units

Flywheel Energy Systems

Inductor-Alternators

Backup Energy Solutions

Fluid Temperature Control

Corona Discharge Prevention

Electric Power Generation

Motor-Generator Devices

Battery Protection Methods

Humidity Control Systems

44 patents: Sort by Forward Citations

1. 9627923 - Apparatus and methods for backfeed detection in and control of uninterruptible power systems (2017-04-18),

2. 8822822 - Insulation system for prevention of corona discharge (2014-09-02),

3. 8671686 - Systems and methods for providing backup energy to a load (2014-03-18),

4. 8333330 - Systems and methods for controlling temperature and pressure of fluids (2012-12-18),

5. 7918091 - Systems and methods for controlling humidity (2011-04-05),

6. 7753646 - Systems and methods for cooling bearings (2010-07-13),

7. 7750518 - Transient energy systems and methods for use of the same (2010-07-06),

8. 7693402 - Thermal storage unit and methods for using the same to heat a fluid (2010-04-06),

9. 7642664 - Transient energy systems and methods for use of the same (2010-01-05),

10. 7425807 - Transient energy systems and methods for use of the same (2008-09-16),

11. 7400052 - Transient energy systems and methods for use of the same (2008-07-15),

12. 7314059 - Systems and methods for controlling pressure of fluids (2008-01-01),

13. 7127895 - Systems and methods for providing backup energy to a load (2006-10-31),

14. 7086231 - Thermal and compressed air storage system (2006-08-08),

15. 7030593 - Multiple path variable speed constant frequency device having automatic power path selection capability (2006-04-18),

Active Power is a leading provider of advanced flywheel energy storage systems and modular infrastructure solutions. The company delivers reliable and efficient power solutions for mission-critical applications. With its innovative technology and expertise, Active Power helps customers optimize their power infrastructure, improve performance, and enhance sustainability in data centers, healthcare facilities, and other critical environments.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

44 Patents

#102 in Santa Clara, CA

#1,813 in California

#7,673 in US

#15,285 in the World

Santa Clara, CA, United States of America

Active Power, Inc.

Forward Citations = 1,095

35 inventors:

Joseph F Pinkerton (28 out of 103 patents)

David B Clifton (12 out of 18 patents)

David E Perkins (10 out of 11 patents)

4. James A Andrews (6 out of 19 patents)

5. David A Badger (5 out of 34 patents)

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