For the Inventor, By the Inventor

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San Diego, CA, United States of America

Sequal Technologies, Inc.

USPTO Granted Patents = 9

% Expired Patents = 11.1

EPO Patents = 4

Trademarks = 5

Forward Citations = 839

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9 inventors (with patents filed for the assignee):

Theodore B Hill (7 out of 22 patents)

Charles C Hill (5 out of 24 patents)

David Phillip Winter (2 out of 28 patents)

4. Adam C Hansen (2 out of 3 patents)

5. Graham Walker (1 out of 5 patents)

6. Scott C Honkonen (1 out of 4 patents)

7. Edward A Radtke (1 out of 2 patents)

8. Robert F Schneider (1 out of 7 patents)

9. James A Bixby (1 out of 18 patents)

10. Masato Sugano (2 patents)

11. Robert A Schneider (3 patents)

12. Edmund L Salter (1 patent)

13. William S Appel (0 patent)

14. Brian Sward (0 patent)

15. Brian Sward (0 patent)

9 patents: Sort by Forward Citations

1. 7517385 - Gas separation device and method of use (2009-04-14),

2. 7025329 - Needle valve for flow control (2006-04-11),

3. 6629525 - Portable oxygen concentration system and method of using the same (2003-10-07),

4. 6471744 - Vacuum-pressure swing absorption fractionator and method of using the same (2002-10-29),

5. 6457485 - Rotary valve assembly for pressure swing absorption system (2002-10-01),

6. 6311719 - Rotary valve assembly for pressure swing adsorption system (2001-11-06),

7. 5979440 - Methods and apparatus to generate liquid ambulatory oxygen from an (1999-11-09),

8. 5730778 - Fluid fractionator (1998-03-24),

9. 5593478 - Fluid fractionator (1997-01-14),

Sequal Technologies, Inc. is a leading technology solutions provider specializing in software development, digital transformation, and IT consulting services. With a team of experienced professionals, Sequal Technologies helps businesses streamline their operations, enhance their customer experience, and drive growth through innovative technology solutions. Whether it's developing custom software applications or implementing cloud-based solutions, Sequal Technologies is committed to delivering high-quality, cost-effective solutions that meet the unique needs of each client.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

9 Patents

#580 in San Diego, CA

#7,726 in California

#32,549 in US

San Diego, CA, United States of America

Sequal Technologies, Inc.

Forward Citations = 839

9 inventors:

Theodore B Hill (7 out of 22 patents)

Charles C Hill (5 out of 24 patents)

David Phillip Winter (2 out of 28 patents)

4. Adam C Hansen (2 out of 3 patents)

5. Graham Walker (1 out of 5 patents)

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