Forward Citations = 4,671

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6 inventors (with patents filed for the assignee):

Robert Charles Ladner (5 out of 107 patents)

Arthur Charles Ley (5 out of 30 patents)

Sonia Kosow Guterman (5 out of 12 patents)

4. Rachel B Kent (5 out of 15 patents)

5. William Markland (3 out of 27 patents)

6. Bruce Lindsay Roberts (3 out of 14 patents)

5 patents: Sort by Forward Citations

1. 5571698 - Directed evolution of novel binding proteins (1996-11-05),

2. 5403484 - Viruses expressing chimeric binding proteins (1995-04-04),

3. 5223409 - Directed evolution of novel binding proteins (1993-06-29),

4. 5198346 - Generation and selection of novel DNA-binding proteins and polypeptides (1993-03-30),

5. 5096815 - Generation and selection of novel DNA-binding proteins and polypeptides (1992-03-17),

Company Overview

Protein Engineering Corporation is a biotechnology company specializing in the design and development of custom proteins for various applications. With a team of skilled scientists and state-of-the-art technology, we offer innovative solutions for protein design, engineering, and production. Our goal is to create novel proteins that can be used in drug discovery, diagnostics, and other research fields to advance scientific understanding and improve human health.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

5 Patents

#368 in Cambridge, MA

#2,892 in Massachusetts

#51,570 in US

Cambridge, MA, United States of America

Protein Engineering Corporation

Forward Citations = 4,671

6 inventors:

Robert Charles Ladner (5 out of 107 patents)

Arthur Charles Ley (5 out of 30 patents)

Sonia Kosow Guterman (5 out of 12 patents)

4. Rachel B Kent (5 out of 15 patents)

5. William Markland (3 out of 27 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Protein Engineering Corporation. Retrieved from https://idiyas.com/company/protein-engineering

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]