A. Finkl & Sons CO.
Doing business as Finkl Steel - Chicago
At a glance
Employees100-499
In business sinceNot reported
HeadquartersChicago, IL
US patents41
SAM.gov UEID96HJQLQ1311
CAGE code22295
Incorporated inDE
- forging die steels
- plastic mold steels
- die casting tool steels
- custom open-die forgings
- four production facilities
- seven presses
- two melt
- melt shops
- billets
- ingots
- aerospace
Named on the company’s own website, read JUL 29, 2026
What they make
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Certifications
ISO 9001
Patents
41 US patents granted 1976–2020, 1 of them in the five years to SEP 2025.
Materials, metallurgy 36Thermal processes and apparatus 3Other special machines 1Handling 1
- High toughness martensitic stainless steel and reciprocating pump manufactured therewithUS 10,870,900 · granted DEC 22, 2020
- Systems and methods for controlling a vacuum arc remelting furnace based on power inputUS 10,591,217 · granted MAR 17, 2020
- Precipitation hardened martensitic stainless steel and reciprocating pump manufactured therewithUS 10,344,758 · granted JUL 9, 2019
- Plastic injection mold tooling and a method of manufacture thereofUS 10,294,538 · granted MAY 21, 2019
- Plastic injection mold tooling and a method of manufacture thereofUS 10,260,122 · granted APR 16, 2019
Newest 5 shown · Granted to A. Finkl & Sons Co. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| A. Finkl & Sons CO. | Chicago | IL | 100–499 | 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.