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Akron, OH, United States of America

Flexsys America L.p.

USPTO Granted Patents = 28

% Expired Patents = 17.9

EPO Patents = 3

Trademarks = 2

Forward Citations = 171

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31 inventors (with patents filed for the assignee):

Donald L Fields, Jr (8 out of 16 patents)

Jayant S Lodaya (7 out of 7 patents)

Roger Keranen Rains (6 out of 10 patents)

4. Otto W Maender (6 out of 17 patents)

5. Michael K Stern (5 out of 27 patents)

6. Frederick Ignatz-Hoover (3 out of 18 patents)

7. Ralph Dale Triplett, Ii (3 out of 3 patents)

8. Raymond Anton Lohr, Jr (3 out of 3 patents)

9. Judicael Jacques Chapelet (2 out of 10 patents)

10. James K Bashkin (2 out of 16 patents)

11. Leandro Forciniti (2 out of 8 patents)

12. Horng-Jau Lin (2 out of 5 patents)

13. Antonio L DeVera (2 out of 2 patents)

14. Raymond A Lohr (2 out of 2 patents)

15. Brian K Cheng (2 out of 21 patents)

Core Competencies:

Triazinane Derivatives

Rubber Blend Compositions

Quinoneimines

Pyrimidine Derivatives

4-Aminodiphenylamine

Zinc Hexasulfide

Sulfenimide

Aromatic Amines

Hydrogen Peroxide

Catalytic Oxidation

Hardness Stabilizers

Rubber Additives

28 patents: Sort by Forward Citations

1. 12410144 - Triazinane derivatives and methods of making them (2025-09-09),

2. 11905256 - Triazinanes and methods of making them (2024-02-20),

3. 8207247 - Processes for preparing rubber blend compositions (2012-06-26),

4. 7718722 - Alkylthio- and aryl(heteroyl)thio-substituted p-phenylenediamines, their manufacture and their use in rubber (2010-05-18),

5. 7504539 - Process for preparing 4-aminodiphenylamine intermediates (2009-03-17),

6. 7183439 - Process for preparing 4-aminodiphenylamine intermediates (2007-02-27),

7. 6646029 - Pyrimidine derivatives as hardness stabilizers (2003-11-11),

8. 6583320 - Process for preparing 4-aminodiphenylamine intermediates (2003-06-24),

9. 6495723 - Zeolite support loaded with a base material for use in the coupling of aniline and nitrobenzene (2002-12-17),

10. 6465604 - Pyrimidine derivatives as hardness stabilizers (2002-10-15),

11. 6420581 - Manufacture of zinc hexasulfide amine complexes (2002-07-16),

12. 6395933 - Process for preparing 4-aminodiphenylamine intermediates (2002-05-28),

13. 6271420 - Preparation of quinonediimines from phenylenediamines using hydrogen peroxide and a catalyst (2001-08-07),

14. 6187937 - Preparation of N-phenyl-benzoquinoneimine from hydroxydiphenylamines (2001-02-13),

15. 6184385 - Process for the manufacture of a sulfenimide (2001-02-06),

Company Overview

Flexsys America L.P., based in Akron, Ohio, specializes in the development and manufacturing of chemical products for the rubber industry. The company focuses on innovative solutions that enhance the performance and durability of rubber materials. With a strong emphasis on research and technology, Flexsys is dedicated to advancing the field through sustainable practices and high-quality products. Its expertise extends to various applications, serving a global market with tailored solutions that meet the evolving needs of its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

28 Patents

#24 in Akron, OH

#530 in Ohio

#12,013 in US

#23,285 in the World

Akron, OH, United States of America

Flexsys America L.p.

Forward Citations = 171

31 inventors:

Donald L Fields, Jr (8 out of 16 patents)

Jayant S Lodaya (7 out of 7 patents)

Roger Keranen Rains (6 out of 10 patents)

4. Otto W Maender (6 out of 17 patents)

5. Michael K Stern (5 out of 27 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Flexsys America L.p.. Retrieved from https://idiyas.com/company/flexsys-america

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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