Ef Johnson Technologies, INC.
Doing business as E F Johnson CO
At a glance
Employees100-499
In business sinceNot reported
HeadquartersIrving, TX
US patents85
SAM.gov UEIDFXHQGSNYK54
CAGE code0RCF7
Incorporated inDE
- mission-critical communication solutions
- Viking
- P25 radios
- ATLAS
- KAIROS P25/DMR systems
- fire/EMS
- law enforcement
- utilities
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
85 US patents granted 1976–2025, 6 of them in the five years to SEP 2025, including 5 design patents.
Digital communication 38Electrical machinery, apparatus, energy 15Telecommunications 12Basic communication processes 5Engines, pumps, turbines 5
- Distributed land mobile radio architecturesUS 12,316,437 · granted MAY 27, 2025
- Distributed land mobile radio architecturesUS 11,936,466 · granted MAR 19, 2024
- Distributed simulcast architectureUS 11,496,212 · granted NOV 8, 2022
- Land mobile radio dispatch consoleUS 11,445,336 · granted SEP 13, 2022
- Automatic volume control for land mobile radioUS 11,374,546 · granted JUN 28, 2022
Newest 5 shown · Granted to E.F. Johnson Company · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Ef Johnson Technologies, INC. | Irving | TX | 100–499 | 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.