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Chicago, IL, United States of America

A. Finkl & Sons Co.

USPTO Granted Patents = 42

CIPO Patents = 7

EPO Patents = 9

Trademarks = 42

Forward Citations = 140

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23 inventors (with patents filed for the assignee):

Charles W Finkl (22 out of 24 patents)

Algirdas A Underys (21 out of 21 patents)

Albert L Lehman (8 out of 8 patents)

4. Guy A Brada (7 out of 7 patents)

5. Bruce C Liimatainen (6 out of 6 patents)

6. Jesse Adamson (3 out of 3 patents)

7. John A Guliana (3 out of 3 patents)

8. Herbert S Philbrick, Jr (3 out of 3 patents)

9. Louis-Philippe Lapierre (2 out of 2 patents)

10. Christian H Ericksen (2 out of 2 patents)

11. Nicholas Cerwin (2 out of 2 patents)

12. Mark Shirley (1 out of 1 patent)

13. Louis-Philippe Lapierre-Boire (1 out of 1 patent)

14. Louis Philippe Lapierre-Boire (1 out of 1 patent)

15. Harold C Thiess (1 out of 1 patent)

Core Competencies:

Zirconium Micro-Alloyed Steel

Martensitic Stainless Steel

Vacuum Arc Remelting

Plastic Injection Mold Tooling

Electric Arc Furnace

Heat Treatment Apparatus

Die Casting Steel

Controlled Fluid Quenching

Ladle Steelmaking

Fatigue Resistant Steel

Non-Micro Banded Steel

High Ductility Steel

42 patents: Sort by Forward Citations

1. 12473619 - Low phosphorus, zirconium micro-alloyed, fracture resistant steel alloys (2025-11-18),

2. 10870900 - High toughness martensitic stainless steel and reciprocating pump manufactured therewith (2020-12-22),

3. 10591217 - Systems and methods for controlling a vacuum arc remelting furnace based on power input (2020-03-17),

4. 10344758 - Precipitation hardened martensitic stainless steel and reciprocating pump manufactured therewith (2019-07-09),

5. 10294538 - Plastic injection mold tooling and a method of manufacture thereof (2019-05-21),

6. 10260122 - Plastic injection mold tooling and a method of manufacture thereof (2019-04-16),

7. 10239245 - Economical plastic tooling cores for mold and die sets (2019-03-26),

8. 9551045 - Flexible minimum energy utilization electric arc furnace system and processes for making steel products (2017-01-24),

9. 8562713 - Flexible minimum energy utilization electric arc furnace system and processes for making steel products (2013-10-22),

10. 7077993 - Apparatus for softening a selected portion of a steel object by heating (2006-07-18),

11. 6972058 - Heat treatment method and apparatus (2005-12-06),

12. 6398885 - Method and apparatus for preventing cracking of the shank junction of die blocks (2002-06-04),

13. 6325203 - Method and apparatus for rapidly processing machine tool chips (2001-12-04),

14. 6110300 - Tool for glass molding operations and method of manufacture thereof (2000-08-29),

15. 6019938 - High ductility very clean non-micro banded die casting steel (2000-02-01),

A. Finkl & Sons Co. is a renowned manufacturer of high-grade specialty steels and forging die products. Established in 1879, the company has a rich history and expertise in providing reliable solutions to diverse industries like automotive, aerospace, and tool & die. A. Finkl & Sons Co. is committed to delivering superior quality products through advanced technology, continuous innovation, and exceptional customer service.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

42 Patents

#110 in Chicago, IL

#441 in Illinois

#7,987 in US

#15,858 in the World

Chicago, IL, United States of America

A. Finkl & Sons Co.

Forward Citations = 140

23 inventors:

Charles W Finkl (22 out of 24 patents)

Algirdas A Underys (21 out of 21 patents)

Albert L Lehman (8 out of 8 patents)

4. Guy A Brada (7 out of 7 patents)

5. Bruce C Liimatainen (6 out of 6 patents)

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