Schweitzer Engineering Laboratories INC
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersPullman, WA
US patents729
SAM.gov UEIEB3GK67LJFR1
CAGE code0NMF8
Incorporated inWA
LEI549300I5NLEOM64PKI64
- technical support
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
729 US patents granted 1991–2025, 282 of them in the five years to SEP 2025, including 26 design patents.
Electrical machinery, apparatus, energy 368Measurement 137Digital communication 112Telecommunications 24Basic communication processes 14
- High-impedance differential protection using a diversity of signalsUS 12,418,168 · granted SEP 16, 2025
- Systems and methods for establishing a secure communication link in an electric power distribution systemUS 12,395,530 · granted AUG 19, 2025
- Programmable network detection of network loopsUS 12,395,419 · granted AUG 19, 2025
- Fault location estimation using incremental quantitiesUS 12,385,962 · granted AUG 12, 2025
- Single-ended broken conductor detection logic using incremental quantitiesUS 12,362,556 · granted JUL 15, 2025
Newest 5 shown · Granted to Schweitzer Engineering Laboratories, Inc. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plants
4 FACILITIES| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Schweitzer Engineering Laboratories | Lewiston | ID | — | LIKELY ACTIVE |
| Schweitzer Engineering Laboratories | Moscow | ID | — | LIKELY ACTIVE |
| Schweitzer Engineering Laboratories INC - Lake Zurich Facili | Lake Zurich | IL | — | UNVERIFIED |
| Schweitzer Engineering Laboratories INC | Pullman | WA | — | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.