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For the Inventor, By the Inventor

San Francisco, CA, United States of America

Owen, Wickersham & Erickson


USPTO Granted Patents = 12

Trademarks = 1

Forward Citations = 212

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1 inventor (with patents filed for the assignee):

goldMedal John E Lindberg (12 out of 21 patents)


12 patents:

1. 4541367 - Combustion and pollution control system (1985-09-17),
2. 4516553 - Combustion and pollution control system (1985-05-14),
3. 4476817 - Combustion and pollution control system (1984-10-16),
4. 4465095 - Pressure-operated flow control valve and molding method (1984-08-14),
5. 4414932 - Method and apparatus for heat storage in internal combustion engines (1983-11-15),
6. 4409931 - Combustion and pollution control system (1983-10-18),
7. 4393817 - Combustion and pollution control system (1983-07-19),
8. 4172437 - PCV flow regulator (1979-10-30),
9. 4140090 - Precombustion chamber, stratified charge internal combustion engine (1979-02-20),
10. 4132247 - Fluid mixing apparatus (1979-01-02),
11. 4131134 - Fluid flow regulator (1978-12-26),
12. 4112892 - Combustion control system for adding fluid above the butterfly valve (1978-09-12),
Owen, Wickersham & Erickson is a leading intellectual property law firm with a global presence. Our attorneys specialize in protecting and enforcing intellectual property rights, including patents, trademarks, copyrights, and trade secrets. We provide a full range of legal services to help our clients maximize the value of their intellectual property assets and achieve their business goals.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

12 Patents

#371 in San Francisco, CA

#5,885 in California

#24,830 in US

#46,729 in the World

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San Francisco, CA, United States of America

Owen, Wickersham & Erickson

Forward Citations = 212

1 inventor:

goldMedal John E Lindberg (12 out of 21 patents)

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