% Expired Patents = 25.0

Forward Citations = 69

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7 inventors (with patents filed for the assignee):

Edmund O Schweitzer, Iii (2 out of 127 patents)

Gabriel Benmouyal (1 out of 25 patents)

Armando Guzman-Casillas (1 out of 60 patents)

4. Hector J Altuve-Ferrer (1 out of 4 patents)

5. Stanley E Zocholl (1 out of 11 patents)

6. Jeffrey B Roberts (1 out of 28 patents)

7. Timothy P Tibbals (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 6567256 - Dual protective relay for power systems (2003-05-20),

2. 6560132 - System for obtaining phase-ground voltages from a broken delta VT voltage connection system (2003-05-06),

3. 6356421 - System for power transformer differential protection (2002-03-12),

4. 5477408 - System for detecting certain erroneous fault-indicating data in a (1995-12-19),

Company Overview

Schweitzer Engineering Labs, Inc. (SEL) is a global leader in power system protection, control, automation, communication, and metering solutions. With a history of innovation and commitment to customer satisfaction, SEL's products and services help power utilities and industries worldwide keep their systems safe, reliable, and efficient.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

4 Patents

#10 in Pullman, WA

#1,463 in Washington

#60,597 in US

Pullman, WA, United States of America

Schweitzer Engineering Labs, Inc.

Forward Citations = 69

7 inventors:

Edmund O Schweitzer, Iii (2 out of 127 patents)

Gabriel Benmouyal (1 out of 25 patents)

Armando Guzman-Casillas (1 out of 60 patents)

4. Hector J Altuve-Ferrer (1 out of 4 patents)

5. Stanley E Zocholl (1 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Schweitzer Engineering Labs, Inc.. Retrieved from https://idiyas.com/company/schweitzer-engineering-labs

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]