John L Preston

This inventor holds 20 USPTO granted patents and 1 published patent application and 1 EPO patent, primarily in Fuel Cell Technology. Top assignees: International Fuel Cells, LLC, Utc Fuel Cells, LLC, Doosan Fuel Cell America, Inc.. Active years: 1980-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John L Preston. Retrieved from https://idiyas.com/inventor/john-l-preston

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

Calculating rank

USPTO Granted Patents = 20 (Patent Applications = 1)

% Patents Active = 95.0

EPO Patents = 1 (Patent Applications = 3)

Average Co-Inventor Count = 2.8

ph-index = 7

Forward Citations = 118(Granted Patents)

Company Filing History:

4 out of 217

International Fuel Cells, LLC

Doosan Fuel Cell America, Inc.

patents

4. 3 out of 10,655

United Technologies Corporation

patents

5. 2 out of 110

Utc Power Corporation

patents

6. 1 out of 16

Clearedge Power Corporation

patents

7. 1 out of 1

Doosan Fuel Cell Amreica, Inc.

International Fuel Cells Co, LLC

patents

Years Active: 1980-2023

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Areas of Expertise:

Fuel Cell

Contaminant Separation

Hydrogen Generation

Emissions Reduction

Hydrodesulfurization

Fuel Processing

Electrolysis Cell

Waste Gas Treatment

Feedstock Pressurization

Desulfurization

Power Plant

Reformer

20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11639476 - Steam/carbon ratio detection and control (2023-05-02),

2. 9923221 - Method of decontaminating a fuel reactant stream for a fuel cell (2018-03-20),

3. 9745526 - Fuel processing of feedstocks having components harmful to hydrodesulfurization (2017-08-29),

4. 9553323 - Fluidized bed contaminant separator and water-control loop for a fuel reactant stream of a fuel cell (2017-01-24),

5. 9444110 - System and method for reducing fuel cell power plant emissions (2016-09-13),

6. 8673511 - Apparatus including sodium chlorate electrolysis cell connected by water cooled catalytic reactor to phosphoric acid fuel cell (2014-03-18),

7. 8557452 - Hydrodesulfurizer recycle applied upstream of processor feedstock pressurization (2013-10-15),

8. 8343256 - Integrated contaminant separator and water-control loop for a fuel reactant stream (2013-01-01),

9. 8206490 - Contaminant separator and isolation loop for a fuel reactant stream for a fuel cell (2012-06-26),

10. 8197792 - Reduced generation of ammonia in nickel catalyst of reformer (2012-06-12),

11. 7128768 - Hydrogen generator for hydrogen desulfurization of hydrocarbon feeds (2006-10-31),

12. 7033557 - Method for removal of contaminants from a hydrogen processor feed stream, as in a fuel cell power plant (2006-04-25),

13. 6979505 - Method and apparatus for removal of contaminants from a hydrogen processor feed stream, as in a fuel cell power plant (2005-12-27),

14. 6210821 - System for implementing operation and start-up of a vehicle which is powered by electricity from a fuel cell power plant (2001-04-03),

15. 6159256 - Method for desulfurizing a fuel for use in a fuel cell power plant (2000-12-12),

Title: The Innovative Journey of John L. Preston

Introduction: John L. Preston, a pioneering inventor hailing from Hebron, CT (US), has made significant contributions to the world of innovations with his groundbreaking ideas and inventions.

Latest Patents: John L. Preston holds several patents in various fields, including technology, healthcare, and engineering. His most recent patents focus on renewable energy solutions and sustainable technologies.

Career Highlights: With a career spanning over two decades, John L. Preston has established himself as a visionary inventor known for his out-of-the-box thinking and problem-solving skills. He has worked with leading research institutions and universities to bring his ideas to life.

Collaborations: Throughout his career, John L. Preston has collaborated with top companies, innovative startups, and fellow inventors to develop cutting-edge technologies that have the potential to shape the future. His collaborative spirit and passion for innovation have led to the successful implementation of several groundbreaking projects.

Conclusion: John L. Preston's relentless pursuit of innovation and his commitment to creating a positive impact on society through his inventions make him a true trailblazer in the world of inventors. His work continues to inspire future generations of inventors and innovators to push the boundaries of what is possible.

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]

1 patent pending:

IDiyas Innovation Intelligence. (2026). Inventor Profile: John L Preston. Retrieved from https://idiyas.com/inventor/john-l-preston

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]

1 patent (EPO):

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]

3 patents pending (EPO):

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]

John L Preston

Company Filing History:

Years Active: 1980-2023

Areas of Expertise:

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