Protonex LLC
Doing business as Pni Sensor
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersWindsor, CA
US patents11
SAM.gov UEIK82GMYAGGU66
CAGE code81R85
Incorporated inCA
- positioning
- algorithms
- Edge AI
- magnetic sensors
- digital magnetic compasses
- position
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
11 US patents granted 2011–2018, none of them in the five years to SEP 2025.
Measurement 7Control 1Furniture, games 1Medical technology 1Computer technology 1
- Magnetic field triggeringUS 10,135,440 · granted NOV 20, 2018
- Monitoring vehicle parking occupancyUS 10,134,275 · granted NOV 20, 2018
- Automatically updating hard iron and soft iron coefficients of a magnetic sensorUS 9,863,867 · granted JAN 9, 2018
- Orientation estimation utilizing a plurality of adaptive filtersUS 9,863,784 · granted JAN 9, 2018
- Aiding a swimmer in maintaining a desired bearingUS 9,839,830 · granted DEC 12, 2017
Newest 5 shown · Granted to PNI Sensor · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Protonex LLC | Windsor | CA | — | 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.