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Pittsburgh, PA, United States of America

Allegheny Ludlum Corporation

USPTO Granted Patents = 101

Trademarks = 3

Forward Citations = 494

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96 inventors (with patents filed for the assignee):

S Leslie Ames (10 out of 16 patents)

James G Benford (9 out of 12 patents)

Jeffrey M Breznak (8 out of 8 patents)

4. Leroy R Price (7 out of 9 patents)

5. Robert H Johns (7 out of 14 patents)

6. James A Salsgiver (7 out of 7 patents)

7. David L Burk (5 out of 6 patents)

8. Yeong-U Kim (5 out of 5 patents)

9. Nazmi Toker (4 out of 4 patents)

10. Dominic A Sorace (4 out of 4 patents)

11. John D Nauman (4 out of 6 patents)

12. Joseph W Tommaney (4 out of 11 patents)

13. James B Hill (3 out of 7 patents)

14. Rowland C Rudolf, Iii (3 out of 3 patents)

15. Eugene W Bartel (3 out of 3 patents)

Core Competencies:

Corrosion Resistant

Austenitic Stainless Steel

Electrical Steels

Domain Refinement

Ferritic Stainless Steel

Metal Armor Plate

Silicon Steel

Composite Materials

Continuous Casting

Hot-Dip Coating

Mechanical Refinement

Thermocouple Selection

101 patents: Sort by Forward Citations

1. 6036917 - Corrosion resistant austenitic stainless steel (2000-03-14),

2. 5980662 - Method for batch annealing of austenitic stainless steels (1999-11-09),

3. 5904315 - Expansion sleeve (1999-05-18),

4. 5894255 - Electromechanical relay (1999-04-13),

5. 5887645 - Method and apparatus for continuous casting with speed synchronization (1999-03-30),

6. 5843246 - Process for producing dual phase ferritic stainless steel strip (1998-12-01),

7. 5749140 - Ballistic resistant metal armor plate (1998-05-12),

8. 5716143 - Spherical plain bearing (1998-02-10),

9. 5590559 - Method and apparatus for domain refining electrical steels by local (1997-01-07),

10. 5588321 - Segmented scribing roller for refining the domain structure of (1996-12-31),

11. 5529644 - Stainless steel and carbon steel composite and method of producing the (1996-06-25),

12. 5490908 - Annealing and descaling method for stainless steel (1996-02-13),

13. 5484009 - Method and apparatus for direct casting of continuous metal strip (1996-01-16),

14. 5483811 - Segmented anvil roller for refining the domain structure of electrical (1996-01-16),

15. 5463889 - Segmented scribing roller for refining the domain structure of (1995-11-07),

Company Overview

Allegheny Ludlum Corporation, based in Pittsburgh, PA, specializes in the development and manufacturing of advanced stainless steel alloys. The company is recognized for its expertise in corrosion-resistant materials, including austenitic and ferritic stainless steels, as well as electrical steels and silicon steel. Their innovative technologies encompass domain refinement and composite materials, catering to diverse industries such as aerospace, automotive, and defense, where high-performance materials are essential for durability and efficiency.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

101 Patents

#33 in Pittsburgh, PA

#147 in Pennsylvania

#3,763 in US

#7,721 in the World

Pittsburgh, PA, United States of America

Allegheny Ludlum Corporation

Forward Citations = 494

96 inventors:

S Leslie Ames (10 out of 16 patents)

James G Benford (9 out of 12 patents)

Jeffrey M Breznak (8 out of 8 patents)

4. Leroy R Price (7 out of 9 patents)

5. Robert H Johns (7 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Allegheny Ludlum Corporation. Retrieved from https://idiyas.com/company/allegheny-ludlum

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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