Hallsten Corporation
At a glance
Employees20-99
In business since1966
HeadquartersNorth Highlands, CA
US patents20
SAM.gov UEIHNEYK9DZ8BA1
CAGE code1LH31
Incorporated inCA
- structural aluminum products
- marine
- metal structures
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
20 US patents granted 1995–2019, none of them in the five years to SEP 2025, including 2 design patents.
Civil engineering 9Chemical engineering 6Handling 2Transport 1
- Tank cover access hatch with safety barrierUS 10,329,812 · granted JUN 25, 2019
- Slide lock for hatch on gas containment coverUS 10,227,799 · granted MAR 12, 2019
- Trench spanning modules in a biofilter floor assemblyUS 10,124,291 · granted NOV 13, 2018
- Fencing floorUS 8,136,312 · granted MAR 20, 2012
- High strength modular support for biofiltration and compostingUS 7,713,732 · granted MAY 11, 2010
Newest 5 shown · Granted to Hallsten Corporation · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Hallsten Corporation | North Highlands | CA | 20–99 | LIKELY 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.