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For the Inventor, By the Inventor

Baton Rouge, LA, United States of America

Hsueh M Li

This inventor holds 17 USPTO granted patents, primarily in Polymer Chemistry. Top assignee: Ethyl Corporation. Active years: 1980-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hsueh M Li. Retrieved from https://idiyas.com/inventor/hsueh-m-li

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

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 6

Forward Citations = 99(Granted Patents)


Company Filing History:

goldMedal17 out of 1,362 
 
Ethyl Corporation
 patents

Years Active: 1980-1992

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Areas of Expertise:
Phosphazene Antioxidants
Thermoplastic Polyester
Prepolymers
Polyamic Acids
Polyimides
Oligomer Production
Halophosphazene Polymers
Liquid Phosphazene
End-Capped Polymers
Phosphonitrilic Polymers
17 patents (USPTO):Explore Patents
1. 5145943 - Production of particulate amide/imide prepolymers (1992-09-08),
2. 5105001 - Phosphazene antioxidants (1992-04-14),
3. 4973661 - Process for forming end capped polyamic acids polyimides (1990-11-27),
4. 4956450 - Process for forming end-capped polyamic acids polyimides (1990-09-11),
5. 4551317 - Phosphonitrilic halide polymers (1985-11-05),
6. 4539352 - Injection-moldable thermoplastic polyester composition (1985-09-03),
7. 4537755 - Selective oligomer production (1985-08-27),
8. 4522798 - Halophosphazene polymers (1985-06-11),
9. 4522797 - Halophosphazene polymers (1985-06-11),
10. 4522796 - Phosphonitrilic chloride polymers (1985-06-11),
11. 4522795 - Phosphonitrilic chloride polymers (1985-06-11),
12. 4486561 - Injection-moldable thermoplastic polyester composition (1984-12-04),
13. 4447408 - Phosphonitrilic chloride polymers (1984-05-08),
14. 4374815 - Phosphonitrilic chloride polymers (1983-02-22),
15. 4289862 - Liquid phosphazene compositions (1981-09-15),

Title: Hsueh M Li: Innovator in Polyimide Technology

Introduction

Hsueh M Li is a prominent inventor based in Baton Rouge, LA (US), known for his significant contributions to the field of polymer chemistry. With a total of 17 patents to his name, he has made remarkable advancements in the production of high-performance materials.

Latest Patents

Among his latest patents, Li has developed a method for the production of particulate amide/imide prepolymers. This innovative process involves the preparation of fusible polyimide powders through the treatment of bis(aminophenyl)methane with aromatic tetracarboxylic anhydride, leading to the creation of a reactive end-capped polyamic acid precursor. The resulting composition undergoes thermal treatment to achieve partial imidization, ultimately yielding a fusible polyimide powder. Additionally, he has disclosed novel substituted phosphazene antioxidants, which are characterized by a specific formula that enhances their utility in various applications.

Career Highlights

Li is currently employed at Ethyl Corporation, where he continues to push the boundaries of polymer science. His work has not only contributed to the advancement of materials technology but has also positioned him as a key figure in the industry.

Collaborations

Throughout his career, Li has collaborated with notable colleagues, including Edwin D Hornbaker and James Y Chung. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Hsueh M Li's contributions to polymer chemistry and his innovative patents underscore his role as a leading inventor in the field. His work continues to influence the development of advanced materials, showcasing the importance of innovation in science and technology.

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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