Lake Mathews, CA, United States of America

James W Heffel

This inventor holds 2 USPTO granted patents. Top assignee: University of California. Active years: 2003-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: James W Heffel. Retrieved from https://idiyas.com/inventor/james-w-heffel

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 2

Forward Citations = 27(Granted Patents)


Company Filing History:


Years Active: 2003-2011

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2 patents (USPTO):Explore Patents

Title: Innovations by James W. Heffel

Introduction

James W. Heffel is an accomplished inventor based in Lake Mathews, California. He has made significant contributions to the field of internal combustion engines, particularly in the utilization of variable mixtures of gaseous fuels. His innovative approach has led to the development of technologies that enhance engine efficiency and adaptability.

Latest Patents

James W. Heffel holds 2 patents. His latest patent focuses on an apparatus and method for operating internal combustion engines from variable mixtures of gaseous fuels. This invention allows for the use of arbitrary mixture ratios of multiple fuel gases, such as natural gas and hydrogen gas, within an internal combustion engine. The system first senses the gaseous fuel composition ratio using various mechanisms, which are then utilized as inputs to a 'multiple map' engine control module. This module modulates selected operating parameters of the engine, such as fuel injection and ignition timing, ensuring optimal performance regardless of the gas mixture ratio. As a result, engines configured according to this invention can be fueled from at least two different sources without any admixing constraints.

Career Highlights

James W. Heffel is affiliated with the University of California, where he continues to contribute to research and development in the field of engine technology. His work has garnered attention for its innovative approach to fuel efficiency and engine performance.

Collaborations

Heffel has collaborated with notable colleagues, including Paul B. Scott and Chan Seung Park. Their combined expertise has further advanced the research and development of efficient combustion technologies.

Conclusion

James W. Heffel's contributions to the field of internal combustion engines demonstrate his commitment to innovation and efficiency. His patents reflect a forward-thinking approach that addresses the challenges of modern fuel usage.

Profile summary based on public USPTO records.
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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