% Expired Patents = 80.0

Forward Citations = 76

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9 inventors (with patents filed for the assignee):

David Litfin (2 out of 4 patents)

Steven L Kosier (1 out of 15 patents)

Peter West (1 out of 7 patents)

4. Steve Kosier (1 out of 2 patents)

5. Kurt Kimber (1 out of 5 patents)

6. Daniel J Fertig (1 out of 4 patents)

7. John Charles Beckman (1 out of 4 patents)

8. Ronald Harlan (1 out of 1 patent)

9. Sandhya Gupta (1 out of 2 patents)

5 patents: Sort by Forward Citations

1. 6898061 - System and method for dynamic ESD Protection (2005-05-24),

2. 6809003 - Bi-directional epitaxial doping technique (2004-10-26),

3. 6804809 - System and method for defining a semiconductor device layout (2004-10-12),

4. 6768176 - Electrostatic discharge protection circuit (2004-07-27),

5. 6747294 - Guard ring structure for reducing crosstalk and latch-up in integrated circuits (2004-06-08),

Company Overview

Polarfab, LLC is a leading manufacturer of precision metal components and assemblies for a variety of industries including aerospace, defense, and medical. With state-of-the-art equipment and highly skilled engineers and technicians, Polarfab specializes in producing high-quality, reliable products that meet the strict requirements of their diverse customer base. From design and prototyping to production and assembly, Polarfab is committed to delivering excellence in every aspect of their business.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#33 in Bloomington, MN

#1,421 in Minnesota

#51,620 in US

Bloomington, MN, United States of America

Polarfab, LLC

Forward Citations = 76

9 inventors:

David Litfin (2 out of 4 patents)

Steven L Kosier (1 out of 15 patents)

Peter West (1 out of 7 patents)

4. Steve Kosier (1 out of 2 patents)

5. Kurt Kimber (1 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Polarfab, LLC. Retrieved from https://idiyas.com/company/polarfab

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]