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For the Inventor, By the Inventor

San Carlos, CA, United States of America

Pinnacle Engines Inc.

Calculating rank
USPTO Granted Patents = 21

% Expired Patents = 61.9


Forward Citations = 117

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7 inventors (with patents filed for the assignee):

goldMedal James Montague Cleeves (19 out of 146 patents)

silverMedal Michael Hawkes (7 out of 7 patents)

bronzeMedal Michael A Willcox (5 out of 5 patents)

4.  Simon David Jackson (4 out of 4 patents)

5.  Nicholas Paul Manov (2 out of 5 patents)

6.  Clayton Naber (2 out of 2 patents)

7.  William Anderson (1 out of 2 patents)

8.  William H Anderson (0 patent)


21 patents:

1. 11454166 - Combustion pressure detection for a hybrid opposed piston engine (2022-09-27),
2. 11156249 - Hybrid opposed-piston internal combustion engine (2021-10-26),
3. 9745915 - Internal combustion engine (2017-08-29),
4. 9650951 - Single piston sleeve valve with optional variable compression ratio capability (2017-05-16),
5. 9528402 - Early exhaust valve opening for improved catalyst light off (2016-12-27),
6. 9316150 - Variable compression ratio diesel engine (2016-04-19),
7. 9267486 - Multi-mode high efficiency internal combustion engine (2016-02-23),
8. 9243578 - Deceleration fuel shut off for carbureted engines (2016-01-26),
9. 9206749 - Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use (2015-12-08),
10. 9194288 - High swirl engine (2015-11-24),
11. 9175609 - Control of combustion mixtures and variability thereof with engine load (2015-11-03),
12. 9016255 - Sealing of sleeve valves (2015-04-28),
13. 8910606 - Positive control (desmodromic) valve systems for internal combustion engines (2014-12-16),
14. 8904998 - Sleeve valve assembly (2014-12-09),
15. 8881708 - Control of combustion mixtures and variability thereof with engine load (2014-11-11),
Company Overview
Pinnacle Engines Inc. is a technology company based in San Carlos, California, specializing in advanced engine systems. The company focuses on developing innovative internal combustion engines that aim to enhance efficiency and reduce emissions. Their research emphasizes optimizing engine performance through unique designs and cutting-edge materials, contributing to the automotive sector's evolution towards more sustainable solutions. Pinnacle Engines is committed to pushing the boundaries of engine technology to meet the demands of modern transportation.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Pinnacle Engines Inc. USPTO Patent Assignee Logo
21 Patents

#19 in San Carlos, CA

#3,764 in California

#15,712 in US

#30,001 in the World

San Carlos, CA (US)
San Carlos, CA, United States of America

Pinnacle Engines Inc.

Forward Citations = 117

7 inventors:

goldMedal James Montague Cleeves (19 out of 146 patents)

silverMedal Michael Hawkes (7 out of 7 patents)

bronzeMedal Michael A Willcox (5 out of 5 patents)

4.  Simon David Jackson (4 out of 4 patents)

5.  Nicholas Paul Manov (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pinnacle Engines Inc.. Retrieved from https://idiyas.com/company/pinnacle-engines

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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