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Wilmington, DE, United States of America

Gpi Nil Holdings Inc.

USPTO Granted Patents = 67

% Expired Patents = 10.4

Forward Citations = 462

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14 inventors (with patents filed for the assignee):

Gregory S Hamilton (67 out of 97 patents)

Joseph P Steiner (47 out of 64 patents)

Jia-He Li (16 out of 44 patents)

4. Douglas T Ross (13 out of 13 patents)

5. Hansjörg Sauer (10 out of 10 patents)

6. Wei Huang (8 out of 21 patents)

7. Solomon H Snyder (5 out of 52 patents)

8. Ted M Dawson (4 out of 19 patents)

9. Yong-Qian Wu (4 out of 7 patents)

10. Eric S Burak (4 out of 4 patents)

11. Mark Henry Norman (3 out of 51 patents)

12. Hansjörg Sauer (2 out of 2 patents)

13. Jai-He Li (2 out of 2 patents)

14. David Limburg (1 out of 2 patents)

Core Competencies:

Vision Disorders

Rotamase Inhibitors

Heterocyclic Compounds

Hair Growth Compositions

Small Molecule Inhibitors

Carboxylic Acids

Sulfonamides

Pyrrolidine Derivatives

Neurotrophic Compounds

Thioesters

Ureas

Isosteres

67 patents: Sort by Forward Citations

1. 7410995 - N-linked sulfonamide of heterocyclic thioesters for vision and memory disorders (2008-08-12),

2. 7338976 - Heterocyclic esters or amides for vision and memory disorders (2008-03-04),

3. 7265150 - Carboxylic acids and carboxylic acid isosteres of N-heterocyclic compounds for vision and memory disorders (2007-09-04),

4. 7153883 - Carboxylic acids and carboxylic acid isosteres of N-heterocyclic compounds (2006-12-26),

5. 7078424 - N-linked sulfonamides of N-heterocyclic carboxylic acids or carboxylic acid isosteres (2006-07-18),

6. 7056935 - Rotamase enzyme activity inhibitors (2006-06-06),

7. 6984639 - Heterocyclic ketone and thioester compounds and uses (2006-01-10),

8. 6943187 - Pyrrolidine derivative hair growth compositions and uses (2005-09-13),

9. 6506788 - N-linked urea or carbamate of heterocyclic thioesters for vision and memory disorders (2003-01-14),

10. 6500959 - Pyrrolidine derivatives and processes for preparing same (2002-12-31),

11. 6486151 - N-oxides of heterocyclic esters, amides, thioesters, and ketones (2002-11-26),

12. 6462072 - Cyclic ester or amide derivatives (2002-10-08),

13. 6429215 - N-oxide of heterocyclic ester, amide, thioester, or ketone hair growth compositions and uses (2002-08-06),

14. 6417209 - Heterocyclic ketone and thioester compounds and uses (2002-07-09),

15. 6417189 - AZA compounds, pharmaceutical compositions and methods of use (2002-07-09),

Company Overview

Gpi Nil Holdings Inc., based in Wilmington, DE, specializes in the development of innovative solutions in the field of heterocyclic compounds. The company focuses on addressing critical health issues, particularly in vision disorders and hair growth, through its research on small molecule inhibitors and rotamase inhibitors. Its expertise extends to various chemical classes, including carboxylic acids, sulfonamides, and pyrrolidine derivatives, positioning it as a key player in pharmaceutical advancements and therapeutic applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

67 Patents

#79 in Wilmington, DE

#97 in Delaware

#5,461 in US

#11,040 in the World

Wilmington, DE, United States of America

Gpi Nil Holdings Inc.

Forward Citations = 462

14 inventors:

Gregory S Hamilton (67 out of 97 patents)

Joseph P Steiner (47 out of 64 patents)

Jia-He Li (16 out of 44 patents)

4. Douglas T Ross (13 out of 13 patents)

5. Hansjörg Sauer (10 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gpi Nil Holdings Inc.. Retrieved from https://idiyas.com/company/gpi-nil-holdings

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]

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