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For the Inventor, By the Inventor

Foster City, CA, United States of America

International Power Technology


USPTO Granted Patents = 22

Forward Citations = 367

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9 inventors (with patents filed for the assignee):

goldMedal Dah Y Cheng (21 out of 42 patents)

silverMedal James J Hamill (4 out of 4 patents)

bronzeMedal William Conlon (3 out of 3 patents)

4.  Ramarao Digumarthi (3 out of 3 patents)

5.  Steve J Wiersma (2 out of 3 patents)

6.  Chun-Nan Chang (2 out of 2 patents)

7.  Michael C Ryan (1 out of 50 patents)

8.  Richard A Bitting (1 out of 1 patent)

9.  Chung-Nan Chang (1 out of 2 patents)


22 patents:

1. 6085513 - Method and apparatus for bypassing the superheater in a dual fluid engine (2000-07-11),
2. 4899537 - Steam-injected free-turbine-type gas turbine (1990-02-13),
3. 4823546 - Steam-injected free-turbine-type gas turbine (1989-04-25),
4. 4790269 - Method and apparatus for improved start-up procedures in conventional (1988-12-13),
5. 4735043 - Method and apparatus for improved start-up procedures in conventional (1988-04-05),
6. 4685288 - Apparatus for removing noncondensable gases from cogenerated process (1987-08-11),
7. 4680927 - Control system for Cheng dual-fluid cycle engine system (1987-07-21),
8. 4597256 - Method and apparatus for improved shutdown procedures in dual fluid (1986-07-01),
9. 4549397 - Control system for Cheng dual-fluid cycle engine system (1985-10-29),
10. 4499721 - Control system for Cheng dual-fluid cycle engine system (1985-02-19),
11. 4476024 - Method and apparatus for distillation (1984-10-09),
12. 4419242 - Composite membrane for a membrane distillation system (1983-12-06),
13. 4419187 - Apparatus and method for thermal membrane distillation (1983-12-06),
14. 4417438 - Control system for Cheng dual-fluid cycle engine system (1983-11-29),
15. 4393649 - Steam output control system (1983-07-19),
Company Overview
International Power Technology, based in Foster City, CA, specializes in the development and manufacturing of advanced power generation technologies. The company focuses on innovative solutions that enhance energy efficiency and sustainability across various sectors. With a commitment to research and development, International Power Technology is at the forefront of creating cutting-edge systems that address the evolving demands of the energy landscape, contributing to a more sustainable future.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

22 Patents

#20 in Foster City, CA

#3,582 in California

#15,021 in US

#28,749 in the World

Foster City, CA (US)
Foster City, CA, United States of America

International Power Technology

Forward Citations = 367

9 inventors:

goldMedal Dah Y Cheng (21 out of 42 patents)

silverMedal James J Hamill (4 out of 4 patents)

bronzeMedal William Conlon (3 out of 3 patents)

4.  Ramarao Digumarthi (3 out of 3 patents)

5.  Steve J Wiersma (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: International Power Technology. Retrieved from https://idiyas.com/company/international-power-technology

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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