Phase Four, INC.
Doing business as Phase Four INC
At a glance
Employees20-99
In business sinceNot reported
HeadquartersHawthorne, CA
US patents4
SAM.gov UEIYBJLGEK2QL15
CAGE code7AH38
Incorporated inDE
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
4 US patents granted 2021–2025, 4 of them in the five years to SEP 2025.
Chemical engineering 2Engines, pumps, turbines 2
- Multimode propulsion systemUS 12,196,158 · granted JAN 14, 2025
- Propellant injector system for plasma production devices and thrustersUS 12,195,205 · granted JAN 14, 2025
- Electrothermal radio frequency thruster and componentsUS 11,231,023 · granted JAN 25, 2022
- Plasma production and control deviceUS 11,067,065 · granted JUL 20, 2021
Granted to Phase Four, INC. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Phase Four, INC. | Hawthorne | CA | 20–99 | 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.