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For the Inventor, By the Inventor

Bartlesville, OK, United States of America

Henry L Hsieh

This inventor holds 71 USPTO granted patents, plus 4 CIPO patents, primarily in Polymer Chemistry (CPC class 5261). Top assignees: Phillips Petroleum Company, Other. Active years: 1976-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Henry L Hsieh. Retrieved from https://idiyas.com/inventor/henry-l-hsieh

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

USPTO Granted Patents = 71

% Patents Active = 100.0

 

Average Co-Inventor Count = 1.9

ph-index = 16

Forward Citations = 798(Granted Patents)

Forward Citations (Not Self Cited) = 746(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Pittboro, NC (US) (1994)
  • Pittsboro, NC (US) (1993 - 1998)
  • Bartlesville, OK (US) (1976 - 2000)
  • Fremont, CA (US) (2023)

Company Filing History:

goldMedal69 out of 5,071 
 
Phillips Petroleum Company
 patents
silverMedal1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1976-2023

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Areas of Expertise:
Superabsorbent Polymers
Grafted Copolymers
Polymerization
Natural Resource Recovery
Ampholytic Ion Pairs
Water-Soluble Copolymers
Flocculation Process
Polymeric Adhesives
Lanthanide Halide Catalyst
Aqueous Electrolyte Solutions
Alkene Addition Process
Thermal Management
71 patents (USPTO):Explore Patents
1. D985070 - Plush toy (2023-05-02),
2. 6030928 - Polymers useful in the recovery and processing of natural resources (2000-02-29),
3. 5829527 - Compositions and applications thereof of water-soluble copolymers (1998-11-03),
4. 5705725 - Aromatic alkali metal alkene addition process (1998-01-06),
5. 5484865 - Copolymers of ampholytic ion pairs containing vinylic tertiary amine (1996-01-16),
6. 5439983 - Grafted copolymers highly absorbent to aqueous electrolyte solutions (1995-08-08),
7. 5412052 - Grafted copolymers highly absorbent to aqueous electrolyte solutions (1995-05-02),
8. 5401816 - Transition metal catalyst, method of preparing catalyst, polymerization (1995-03-28),
9. 5391659 - Polymerization process employing lanthanide halide catalyst and polymer (1995-02-21),
10. 5382371 - Polymers useful in the recovery and processing of natural resources (1995-01-17),
11. 5376729 - Grafted copolymers highly absorbent to aqueous electrolyte solutions (1994-12-27),
12. 5357000 - Grafted copolymers highly absorbent to aqueous electrolyte solutions (1994-10-18),
13. 5354806 - Superabsorbent crosslinked ampholytic ion pair copolymers (1994-10-11),
14. 5334685 - Grafted copolymers highly absorbent to aqueous electrolyte solutions (1994-08-02),
15. 5331021 - Grafted copolymers highly absorbent to aqueous electrolyte solutions (1994-07-19),

Title: Henry L. Hsieh: Innovator in Polymer Technologies

Introduction

Henry L. Hsieh is an accomplished inventor based in Bartlesville, Oklahoma, with an impressive portfolio of 70 patents to his name. His work focuses primarily on the development of polymers that facilitate the recovery and processing of natural resources, contributing to advancements in oil field operations and related applications.

Latest Patents

Among his latest innovations, Hsieh has developed polymers that are particularly beneficial for use in subterranean wellbores. One significant patent involves soluble polymers composed of N-vinyl amides, including N-vinyl lactams, which are utilized in recovery processes of natural resources. These polymers are prepared through free radical initiation in various aqueous solution mediums.

Furthermore, Hsieh has explored copolymers of N-vinyl lactams combined with unsaturated amides, as well as terpolymers that incorporate selected termonomer compounds. This broad spectrum of polymers is designed for application in hostile environments, ensuring their effectiveness in various operational conditions. Another patent highlights the utility of water-soluble copolymers, where specific compositions are tailored for oil field operations, including crosslinking agents that improve the performance of well treating fluids in high-temperature conditions.

Career Highlights

Henry L. Hsieh has made substantial contributions throughout his career, particularly during his tenure at Phillips Petroleum Company. His inventive work in polymer chemistry and materials science has been recognized within the industry and has set benchmarks for future research and development in the field.

Collaborations

During his career, Hsieh has collaborated with esteemed colleagues such as Iqbal Ahmed and Ted M. Pettijohn. These partnerships have fostered innovative research and have furthered advancements in polymer technology and its applications in natural resource recovery.

Conclusion

Henry L. Hsieh stands out as a leading figure in the realm of polymer innovations, with a significant number of patents that highlight his expertise and contributions to the industry. His work not only showcases technical proficiency but also emphasizes a commitment to enhancing the efficiency of natural resource recovery processes. As the field of polymer research continues to evolve, Hsieh's contributions will undoubtedly play a crucial role in shaping its future.

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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