Trademarks = 1

Forward Citations = 105

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7 inventors (with patents filed for the assignee):

Robert E Smith (7 out of 28 patents)

Mary P Zimmerman (7 out of 7 patents)

James T Palmer (3 out of 19 patents)

4. Mark Becker (2 out of 2 patents)

5. Eugene R Bissell (1 out of 6 patents)

6. David W Rasnick (1 out of 5 patents)

7. Kyujin Cho (1 out of 2 patents)

11 patents: Sort by Forward Citations

1. 6297277 - Cysteine protease inhibitors containing heterocyclic leaving groups (2001-10-02),

2. 6147188 - .alpha.- (1,3- or 1, 2- dicarbonylenol ether methyl ketones as cysteine (2000-11-14),

3. 5925772 - Cysteine protease inhibitors containing heterocyclic leaving groups (1999-07-20),

4. 5714484 - .alpha.-(1,3-dicarbonylenol ether) methyl ketones as cysteine protease (1998-02-03),

5. 5663380 - Cysteine protease inhibitors containing heterocyclic leaving groups (1997-09-02),

6. 5486623 - Cysteine protease inhibitors containing heterocyclic leaving groups (1996-01-23),

7. 5374623 - Cysteine protease inhibitors effective for in vivo use (1994-12-20),

8. 5344939 - Process for forming a fluoromethyl ketone (1994-09-06),

9. 5210272 - Process for forming a fluoromethyl ketone (1993-05-11),

10. 5101068 - Magnesium fluoromalonates (1992-03-31),

11. 4908309 - Method of detecting cysteine proteases (1990-03-13),

Company Overview

Prototek, Inc. is a leading provider of rapid prototyping and manufacturing services, specializing in precision machining and additive manufacturing. Based in Dublin, California, the company focuses on delivering high-quality prototypes and production parts across various industries, including aerospace, automotive, and consumer products. Prototek leverages advanced technologies and materials to meet the diverse needs of its clients, ensuring efficient and reliable solutions for product development and innovation.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

11 Patents

#13 in Dublin, CA

#6,532 in California

#27,490 in US

#51,714 in the World

Dublin, CA, United States of America

Prototek, Inc.

Forward Citations = 105

7 inventors:

Robert E Smith (7 out of 28 patents)

Mary P Zimmerman (7 out of 7 patents)

James T Palmer (3 out of 19 patents)

4. Mark Becker (2 out of 2 patents)

5. Eugene R Bissell (1 out of 6 patents)

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

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]