King Tester CORP
At a glance
Employees20-99
In business since1936
HeadquartersPhoenixville, PA
US patents11
SAM.gov UEIESG9MCKM1QA5
CAGE code1Y6U3
Incorporated inPA
- hardness testing equipment
- testers
- test blocks
- calibration
- manufacturers
- metal processors
- case studies
- heat treating
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
11 US patents granted 1982–2017, none of them in the five years to SEP 2025, including 7 design patents.
Measurement 4
- Metal hardness test block with alphanumeric grid and circular targets with cross hairsUS D789816 · granted JUN 20, 2017
- Portable brinell hardness tester with stented through bore pumping chamberUS 9,568,406 · granted FEB 14, 2017
- Stroke limiter bracketUS D729613 · granted MAY 19, 2015
- Metal hardness tester block having an alphanumeric platted gridUS D722900 · granted FEB 24, 2015
- Maintenance support for a test head removed from a portable Brinell metal hardness testerUS D709353 · granted JUL 22, 2014
Newest 5 shown · Granted to King Tester Corporation · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| King Tester CORP | Phoenixville | PA | 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.