For the Inventor, By the Inventor

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Pittsburgh, PA, United States of America

Koppers Performance Chemicals Inc.

USPTO Granted Patents = 22

CIPO Patents = 1

EPO Patents = 6

Trademarks = 10

Forward Citations = 19

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11 inventors (with patents filed for the assignee):

Jun Zhang (20 out of 72 patents)

John Horton (7 out of 19 patents)

Peter Tham (5 out of 6 patents)

4. Robert M Leach (5 out of 19 patents)

5. Min Kuang (4 out of 4 patents)

6. Xinhao Howard Gao (4 out of 4 patents)

7. Md Sayful Islam (2 out of 4 patents)

8. Richard Ziobro (2 out of 2 patents)

9. H Wayne Richardson (1 out of 9 patents)

10. Robert L Hodge (1 out of 11 patents)

11. Nigel Paul Maynard (1 out of 2 patents)

12. Richard (deceased) Ziobro (0 patent)

13. Hans-Norbert Marx (0 patent)

22 patents: Sort by Forward Citations

1. 12636810 - Wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method treating a wood substrate therewith, and a wood product produced therefrom (2026-05-26),

2. 12491658 - Wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method treating a wood substrate therewith, and a wood product produced therefrom (2025-12-09),

3. 12370716 - Wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method treating a wood substrate therewith, and a wood product produced therefrom (2025-07-29),

4. 12279615 - Wood preservative and method for producing same (2025-04-21),

5. 11951649 - Method for producing copper carboxylate, a wood preservative composition comprising copper carboxylate, and a wood product produced therefrom (2024-04-09),

6. 11882833 - Wood preservative and method for producing same (2024-01-30),

7. 11173626 - Stable wood preservative formulations (2021-11-16),

8. 11140901 - Wood preservative and method for producing same (2021-10-12),

9. 11102980 - Method of preparing copper-containing wood preserving compositions (2021-08-31),

10. 11091654 - Spray-on exterior coating compositions for wood treatment (2021-08-17),

11. 11072086 - Wood pigment compositions and wood treatment processes (2021-07-27),

12. 10500756 - Methods of conferring fire retardancy to wood and fire-retardant wood products (2019-12-10),

13. 10442110 - Wood treatment for dimensional stabilization (2019-10-15),

14. 10137595 - Wood treatment for dimensional stabilization (2018-11-27),

15. 9937634 - Compositions and methods for treating cellulose-based materials with micronized additives (2018-04-10),

Company Overview

Koppers Performance Chemicals Inc., based in Pittsburgh, PA, specializes in the development and manufacturing of innovative chemical solutions. The company focuses on providing high-performance products for various industries, including wood preservation, specialty chemicals, and advanced materials. Koppers leverages its expertise in chemical engineering and technology to deliver tailored solutions that meet the evolving needs of its global clientele, emphasizing sustainability and efficiency in its operations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

22 Patents

#110 in Pittsburgh, PA

#548 in Pennsylvania

#15,021 in US

#28,749 in the World

Pittsburgh, PA, United States of America

Koppers Performance Chemicals Inc.

Forward Citations = 19

11 inventors:

Jun Zhang (20 out of 72 patents)

John Horton (7 out of 19 patents)

Peter Tham (5 out of 6 patents)

4. Robert M Leach (5 out of 19 patents)

5. Min Kuang (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Koppers Performance Chemicals Inc.. Retrieved from https://idiyas.com/company/koppers-performance-chemicals

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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