Pier Tech LLC
Doing business as Pier Tech Systems
At a glance
Employees1-19
In business sinceNot reported
HeadquartersChesterfield, MO
US patents10
SAM.gov UEIHVM7UNNK1PA3
CAGE code7LQZ7
Incorporated inMO
Brands
Product 1
Airbnb
SlackThis company sells these brands.
- helical piers
- piles
- anchors
- installation equipment
- equipment packages
- drive heads
- attachments
- augers
- engineering services
- helical pier systems
- engineered foundation accessories
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
10 US patents granted 2016–2025, 7 of them in the five years to SEP 2025.
Civil engineering 10
- Snap lock, anti-reverse rotation coupler assembly for foundation support systemUS 12,392,103 · granted AUG 19, 2025
- Tapered, locking, anti-reverse coupler assembly for foundation support systemUS 12,359,388 · granted JUL 15, 2025
- Foundation support systems, assemblies and methods including sleeve coupler and shafts with torque transmitting profiled distal end edgesUS 12,338,599 · granted JUN 24, 2025
- Modular helical pier foundation support systems, assemblies and methods with snap-lock couplingsUS 12,338,598 · granted JUN 24, 2025
- Foundation support system shaft coupler fabrication and assemblyUS 12,203,232 · granted JAN 21, 2025
Newest 5 shown · Granted to Pier Tech Systems, LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Pier Tech LLC | Chesterfield | MO | 1–19 | 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.