Langdon INC
At a glance
Employees1-19
In business sinceNot reported
Industry
HeadquartersCincinnati, OH
US patents14
SAM.gov UEICAASJ2C3Y565
CAGE code0S4V3
Incorporated inOH
- machine-belt guards
- electric control panels
- specialty items
- carbon steel
- stainless steel
- aluminum
- abrasion resistant steel
- HVAC
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
14 US patents granted 1976–2019, none of them in the five years to SEP 2025, including 5 design patents.
Thermal processes and apparatus 5Mechanical elements 3Furniture, games 1
- Damper access assembly, clamp assembly, and clamp memberUS 10,480,812 · granted NOV 19, 2019
- Fluid conditioning devices and assembliesUS 10,012,333 · granted JUL 3, 2018
- Damper access assembly, clamp assembly, and clamp memberUS 9,551,505 · granted JAN 24, 2017
- Damper access assemblyUS 9,341,291 · granted MAY 17, 2016
- Clamping memberUS D737133 · granted AUG 25, 2015
Newest 5 shown · Granted to Langdon Incorporated · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Langdon INC | Cincinnati | OH | 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.