Colonial Metals, INC
At a glance
Employees20-99
In business sinceNot reported
HeadquartersElkton, MD
US patents4
SAM.gov UEIGQMGFXCNNXK5
CAGE code1K642
Incorporated inNY
Parent companyAmes Goldsmith CORP.
LEI549300F0RLFEIJY46D75
- chemicals
- precious metals
- greenhouse gas emissions
- planting trees
- updating facility lighting
- smart controllers
- photovoltaic arrays
- equal opportunity employer
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
4 US patents granted 1977–2006, none of them in the five years to SEP 2025.
Materials, metallurgy 2Environmental technology 1Chemical engineering 1
- Method for depositing and etching ruthenium layersUS 7,129,170 · granted OCT 31, 2006
- Method for purifying ruthenium and related processesUS 6,458,183 · granted OCT 1, 2002
- Apparatus for catalytic oxidation of grease and fats in low temperature fumesUS 4,138,220 · granted FEB 6, 1979
- Catalytic mixture and method of use thereforUS 4,048,092 · granted SEP 13, 1977
Granted to Colonial Metals, Inc. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Colonial Metals, INC | Elkton | MD | 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.