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For the Inventor, By the Inventor

Middletown, OH, United States of America

Armco Steel Corporation


USPTO Granted Patents = 80

Trademarks = 11

Forward Citations = 910

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90 inventors (with patents filed for the assignee):

goldMedal Marvin B Pierson (11 out of 14 patents)

silverMedal Thomas A Compton (6 out of 8 patents)

bronzeMedal James D Evans (5 out of 6 patents)

4.  Harry Tanczyn (5 out of 10 patents)

5.  Hart F Graff (5 out of 7 patents)

6.  Paul E Schnedler (4 out of 4 patents)

7.  John M Maxel (3 out of 6 patents)

8.  Rollin E Hook (3 out of 6 patents)

9.  Frank C Dunbar (3 out of 9 patents)

10.  Jerry L Arnold (3 out of 5 patents)

11.  William R Leasure (3 out of 3 patents)

12.  Alan F Gibson (2 out of 12 patents)

13.  Donald H Ward (2 out of 3 patents)

14.  Charles Flinchum (2 out of 8 patents)

15.  John A Thornton (2 out of 12 patents)


Core Competencies:
Waste Water Filtration
Metallic Coating Method
Austenitic Stainless Steel
Aluminum Coatings
Seam Crimping Apparatus
Electrostatic Coating
Underwater Riser System
Refractory Materials
Pipe Coupling
Surface Insulation Resistance
Cold Rolled Steel
Nitrided Stainless Steel

80 patents:

1. 4190534 - Waste water filtration and sludge removal system (1980-02-26),
2. 4176865 - Coupling for pipe (1979-12-04),
3. 4173139 - Ultrasonic reference standard and the methods of construction and use (1979-11-06),
4. 4169734 - Chemically bonded magnesia-chrome refractories (1979-10-02),
5. 4165882 - Sealing means for slide gate (1979-08-28),
6. 4155235 - Production of heavy pure aluminum coatings on small diameter tubing (1979-05-22),
7. 4153006 - Apparatus for finishing molten metallic coatings (1979-05-08),
8. 4152471 - Method for continuously contact-coating one side only of a ferrous base (1979-05-01),
9. 4148946 - Method for maintaining a non-oxidizing atmosphere at positive pressure (1979-04-10),
10. 4147383 - Pipe coupling (1979-04-03),
11. 4146412 - Galling resistant austenitic stainless steel (1979-03-27),
12. 4146209 - Gate valve (1979-03-27),
13. 4143498 - Concealed fastener clip for building panels (1979-03-13),
14. 4140552 - Method of treating aluminum-killed and low alloy steel strip and sheet (1979-02-20),
15. 4137347 - Metallic coating method (1979-01-30),
Armco Steel Corporation is a leading steel manufacturer with a rich history dating back to 1899. The company offers a wide range of high-quality steel products for various industries, including automotive, construction, and infrastructure. With a commitment to innovation and sustainability, Armco Steel Corporation continues to be a trusted name in the steel industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

80 Patents

#3 in Middletown, OH

#201 in Ohio

#4,438 in US

#9,062 in the World

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Middletown, OH, United States of America

Armco Steel Corporation

Forward Citations = 910

90 inventors:

goldMedal Marvin B Pierson (11 out of 14 patents)

silverMedal Thomas A Compton (6 out of 8 patents)

bronzeMedal James D Evans (5 out of 6 patents)

4.  Harry Tanczyn (5 out of 10 patents)

5.  Hart F Graff (5 out of 7 patents)

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