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For the Inventor, By the Inventor

Williamsville, NY, United States of America

James S Siepierski

This inventor holds 10 USPTO granted patents. Top assignee: Gm Global Technolgoy Operations, Inc.. Active years: 2001-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: James S Siepierski. Retrieved from https://idiyas.com/inventor/james-s-siepierski

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

USPTO Granted Patents = 10

% Patents Active = 70.0

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 67(Granted Patents)


Location History:

  • Wiliamsville, NY (US) (2010)
  • Williamsville, NY (US) (2001 - 2012)

Company Filing History:

goldMedal10 out of 31,896 
 
Gm Global Technolgoy Operations, Inc.
 patents

Years Active: 2001-2012

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10 patents (USPTO):Explore Patents
1. 8158296 - Circulation check for fuel cell coolant (2012-04-17),
2. 7781113 - Circulation check for fuel cell coolant (2010-08-24),
3. 7320840 - Combination of injector-ejector for fuel cell systems (2008-01-22),
4. 7205058 - Residual stack shutdown energy storage and usage for a fuel cell power system (2007-04-17),
5. 7067211 - Cogeneration system for a fuel cell (2006-06-27),
6. 6902838 - Cogeneration system for a fuel cell (2005-06-07),
7. 6884528 - Cogeneration system for a fuel cell (2005-04-26),
8. 6830842 - Hydrogen purged motor for anode re-circulation blower (2004-12-14),
9. 6365289 - Cogeneration system for a fuel cell (2002-04-02),
10. 6268074 - Water injected fuel cell system compressor (2001-07-31),

Title: Innovations of James S. Siepierski

Introduction

James S. Siepierski is a notable inventor based in Williamsville, NY (US). He has made significant contributions to the field of fuel cell technology, holding a total of 10 patents. His work focuses on improving the efficiency and functionality of fuel cell systems.

Latest Patents

One of his latest patents is titled "Circulation Check for Fuel Cell Coolant." This invention discloses systems for checking thermal-induced circulation of a coolant in a fuel cell stack. The system includes coolant inlet and outlet lines extending from a fuel cell stack, along with a pump and a radiator that are confluently connected to these lines. In one embodiment, a valve, either check type or automatic type, is provided in the coolant outlet line at the bottom of the fuel cell stack. This valve prevents the flow of cold coolant from the outlet line into the fuel cell stack upon start-up. Another embodiment features a valve in the coolant inlet line at the top of the fuel cell stack, which can also be either one-way flow control type or automatic type. The patent also discloses a method for checking thermal-induced circulation of coolant in a fuel cell stack.

Career Highlights

James S. Siepierski is currently employed at GM Global Technology Operations, Inc. His work at this company has allowed him to develop innovative solutions that enhance the performance of fuel cells. His expertise in this area has made him a valuable asset to his team and the industry.

Collaborations

Some of his notable coworkers include James H. Lee and George R. Woody. Their collaborative efforts contribute to the advancement of technology in the field of fuel cells.

Conclusion

James S. Siepierski's contributions to fuel cell technology through his patents and collaborations highlight his role as an influential inventor. His work continues to pave the way for advancements in energy efficiency and sustainability.

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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