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Piscataway, NJ, United States of America

Enzon, Inc.

USPTO Granted Patents = 100

% Expired Patents = 11.0

CIPO Patents = 1

Trademarks = 1

Forward Citations = 7,882

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54 inventors (with patents filed for the assignee):

Richard B Greenwald (49 out of 61 patents)

Annapurna Pendri (21 out of 45 patents)

David R Filpula (21 out of 28 patents)

4. Marc D Whitlow (19 out of 20 patents)

5. Anthony J Martinez (16 out of 23 patents)

6. Robert G Shorr (15 out of 34 patents)

7. Yun Hwang Choe (12 out of 16 patents)

8. Hong Zhao (10 out of 36 patents)

9. Maoliang Wang (8 out of 10 patents)

10. Robert E Bird (7 out of 14 patents)

11. Karl D Hardman (7 out of 12 patents)

12. Kwang Nho (7 out of 7 patents)

13. Carl W Gilbert (7 out of 13 patents)

14. Lihsyng Standford Lee (6 out of 6 patents)

15. Shmuel Zalipsky (6 out of 6 patents)

Core Competencies:

Polyethylene Glycol

Prodrugs

Antigen-Binding Proteins

Biodegradable Linkers

Single-Chain Polypeptides

Nucleic Acid Delivery

Multivalent Proteins

Amino Acid Derivatives

Active Carbonates

Hemoglobin Conjugates

Taxane Derivatives

Glycolipid Enzymes

100 patents: Sort by Forward Citations

1. 7632504 - Polyalkylene oxide-modified single chain polypeptides (2009-12-15),

2. 7393953 - Polymeric acyl derivatives of indoles (2008-07-01),

3. 7262164 - Polymeric thiol-linked prodrugs employing benzyl elimination systems (2007-08-28),

4. 7150872 - Polyalkylene oxide-modified single chain polypeptides (2006-12-19),

5. 7122189 - Releasable polymeric conjugates based on aliphatic biodegradable linkers (2006-10-17),

6. 6936597 - Prodrugs of anticancer agents employing substituted aromatic acids (2005-08-30),

7. 6872393 - Polyalkylene oxide-modified single chain polypeptides (2005-03-29),

8. 6824782 - Polyalkylene oxide-modified single chain polypeptides (2004-11-30),

9. 6824766 - Biodegradable high molecular weight polymeric linkers and their conjugates (2004-11-30),

10. 6756037 - Polymer conjugates of biologically active agents and extension moieties for facilitating conjugation of biologically active agents to polymeric terminal groups (2004-06-29),

11. 6743908 - Single-chain antigen-binding proteins capable of glycosylation, production and uses thereof (2004-06-01),

12. 6743896 - Single-chain antigen-binding proteins capable of glycosylation, production and uses thereof (2004-06-01),

13. 6692942 - Single-chain polypeptides for targeted delivery of nucleic acids (2004-02-17),

14. 6649778 - Methods of preparing amino acid taxane derivatives and polymer conjugates containing the same (2003-11-18),

15. 6638499 - Terminally-branched polymeric linkers and polymeric conjugates containing the same (2003-10-28),

Company Overview

Enzon, Inc., based in Piscataway, NJ, specializes in the development of polymer conjugates, focusing on innovative drug delivery systems. The company leverages its expertise in polyethylene glycol and prodrugs to enhance therapeutic efficacy and reduce side effects. Enzon's research encompasses a range of advanced technologies, including biodegradable linkers, single-chain polypeptides, and multivalent proteins, aimed at improving nucleic acid delivery and the functionality of antigen-binding proteins. This commitment to cutting-edge biopharmaceutical solutions positions Enzon as a key player in the biotechnology sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

100 Patents

#6 in Piscataway, NJ

#174 in New Jersey

#3,795 in US

#7,774 in the World

Piscataway, NJ, United States of America

Enzon, Inc.

Forward Citations = 7,882

54 inventors:

Richard B Greenwald (49 out of 61 patents)

Annapurna Pendri (21 out of 45 patents)

David R Filpula (21 out of 28 patents)

4. Marc D Whitlow (19 out of 20 patents)

5. Anthony J Martinez (16 out of 23 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Enzon, Inc.. Retrieved from https://idiyas.com/company/enzon

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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