Robert C Stempel

This inventor holds 7 USPTO granted patents. Top assignees: Ovonic Battery Company, Inc., Energy Conversion Devices, Inc.. Active years: 2001-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Robert C Stempel. Retrieved from https://idiyas.com/inventor/robert-c-stempel

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

USPTO Granted Patents = 7

% Patents Active = 85.7

Average Co-Inventor Count = 2.2

ph-index = 7

Forward Citations = 149(Granted Patents)

Location History:

Rochester Hills, MI (US) (2003 - 2004)
Troy, MI (US) (2001 - 2005)
Oxford, MI (US) (2004 - 2007)

Company Filing History:

6 out of 114

Ovonic Battery Company, Inc.

patents

1 out of 429

Energy Conversion Devices, Inc.

patents

Years Active: 2001-2007

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7226675 - Very low emission hybrid electric vehicle incorporating an integrated propulsion system including a fuel cell and a high power nickel metal hydride battery pack (2007-06-05),

2. 6837321 - Hybrid electric vehicle incorporating an integrated propulsion system (2005-01-04),

3. 6820706 - Method and system for hydrogen powered internal combustion engine (2004-11-23),

4. 6759034 - Very low emission hybrid electric vehicle incorporating an integrated propulsion system including a hydrogen powered internal combustion engine and a high power Ni-MH battery pack (2004-07-06),

5. 6565836 - Very low emission hybrid electric vehicle incorporating an integrated propulsion system including a hydrogen powered internal combustion engine and a high power Ni-MH battery pack (2003-05-20),

6. 6557655 - Hybrid electric vehicle (2003-05-06),

7. 6330925 - Hybrid electric vehicle incorporating an integrated propulsion system (2001-12-18),

Title: The Innovations of Robert C. Stempel

Introduction

Robert C. Stempel is a notable inventor based in Oxford, MI (US). He has made significant contributions to the field of hybrid electric vehicles, holding a total of 7 patents. His work focuses on developing advanced propulsion systems that reduce emissions and enhance energy efficiency.

Latest Patents

Stempel's latest patents include a very low emission hybrid electric vehicle that incorporates an integrated propulsion system. This system features a fuel cell and a high power nickel metal hydride battery pack. The vehicle is designed to achieve a peak power density in relation to energy density, ensuring optimal performance. Another patent involves a hybrid electric vehicle drive system that combines a combustion engine, an electric motor, and at least one nickel metal hydride battery module. This innovative design aims to provide electric power efficiently to the electric motor.

Career Highlights

Throughout his career, Stempel has worked with prominent companies such as Ovonic Battery Company, Inc. and Energy Conversion Devices, Inc. His expertise in battery technology and hybrid systems has positioned him as a leader in the industry.

Collaborations

Stempel has collaborated with notable figures in the field, including Stanford R. Ovshinsky and Richard O. Geiss. These partnerships have contributed to the advancement of technologies in energy storage and hybrid vehicle systems.

Conclusion

Robert C. Stempel's innovative work in hybrid electric vehicles and battery technology has made a lasting impact on the automotive industry. His patents reflect a commitment to reducing emissions and improving energy efficiency in transportation.

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]