Forward Citations = 271

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8 inventors (with patents filed for the assignee):

Roger N Piasio (4 out of 5 patents)

David A Perry (4 out of 4 patents)

Pangal N Nayak (3 out of 3 patents)

4. P Narayan Nayak (1 out of 2 patents)

5. Alfred Chung (1 out of 27 patents)

6. James W Ryan (1 out of 71 patents)

7. Richard J Zahradnik (1 out of 1 patent)

8. Peter Stead (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 4981785 - Apparatus and method for performing immunoassays (1991-01-01),

2. 4425320 - Method and apparatus for carrying out solid phase in vitro diagnostic (1984-01-10),

3. 4378344 - Method and apparatus for performing multiple, simultaneous in vitro (1983-03-29),

4. 4335041 - High sensitivity assays for angiotensin converting enzyme (1982-06-15),

5. 4305924 - Method and apparatus for performing in vitro clinical diagnostic tests (1981-12-15),

6. 4225575 - Method and apparatus for performing in vitro clinical diagnostic tests (1980-09-30),

7. 4197287 - Method and apparatus for performing in nitro clinical diagnostic tests (1980-04-08),

Company Overview

Ventrex Laboratories, Inc. is a leading pharmaceutical company dedicated to providing high-quality healthcare products at affordable prices. With a focus on research and innovation, Ventrex Labs develops a wide range of generic and branded medications for various therapeutic areas. The company's commitment to quality and customer satisfaction sets them apart in the industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#11 in Portland, ME

#55 in Maine

#39,907 in US

Portland, ME, United States of America

Ventrex Laboratories, Inc.

Forward Citations = 271

8 inventors:

Roger N Piasio (4 out of 5 patents)

David A Perry (4 out of 4 patents)

Pangal N Nayak (3 out of 3 patents)

4. P Narayan Nayak (1 out of 2 patents)

5. Alfred Chung (1 out of 27 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ventrex Laboratories, Inc.. Retrieved from https://idiyas.com/company/ventrex-laboratories

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]