Zen Industries INC
Doing business as American Mine Door
At a glance
Employees20-99
In business sinceNot reported
HeadquartersCleveland, OH
US patents4
SAM.gov UEITNB2EKJF8NZ3
CAGE code3VMR8
Incorporated inOH
Brands
International Sells
About Us AMD
Mapa AMD
AMD InstalationThis company sells these brands.
- pedestrian doors
- custom doors
- electrical control
- automation components
- installation service
- international sales
- mining industry
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsWoman Owned BusinessWoman Owned Small Business
Self-certified by the company in its SAM.gov registration
Patents
4 US patents granted 2014–2020, none of them in the five years to SEP 2025.
Civil engineering 4
- Mine ventilation door with wings and slidable or pocket personnel doorUS 10,538,956 · granted JAN 21, 2020
- Mine ventilation door with wings and slidable or pocket personnel doorUS 9,476,301 · granted OCT 25, 2016
- Robust mine ventilation door with single actuation systemUS 9,181,802 · granted NOV 10, 2015
- Control system for mine ventilation doorUS 8,884,760 · granted NOV 11, 2014
Granted to American Mine Door CO. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Zen Industries INC | Cleveland | OH | 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.