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Pittsburgh, PA, United States of America

Koppers Performance Chemicals Inc.

USPTO Granted Patents = 21

CIPO Patents = 13

EPO Patents = 6

Trademarks = 15

Forward Citations = 16

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19 inventors (with patents filed for the assignee):

Jun Zhang (19 out of 71 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. Xinhao Howard Gao (4 out of 4 patents)

6. Min Kuang (3 out of 3 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)

21 patents: Sort by Forward Citations

1. 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),

2. 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),

3. 12279615 - Wood preservative and method for producing same (2025-04-21),

4. 11951649 - Method for producing copper carboxylate, a wood preservative composition comprising copper carboxylate, and a wood product produced therefrom (2024-04-09),

5. 11882833 - Wood preservative and method for producing same (2024-01-30),

6. 11173626 - Stable wood preservative formulations (2021-11-16),

7. 11140901 - Wood preservative and method for producing same (2021-10-12),

8. 11102980 - Method of preparing copper-containing wood preserving compositions (2021-08-31),

9. 11091654 - Spray-on exterior coating compositions for wood treatment (2021-08-17),

10. 11072086 - Wood pigment compositions and wood treatment processes (2021-07-27),

11. 10500756 - Methods of conferring fire retardancy to wood and fire-retardant wood products (2019-12-10),

12. 10442110 - Wood treatment for dimensional stabilization (2019-10-15),

13. 10137595 - Wood treatment for dimensional stabilization (2018-11-27),

14. 9937634 - Compositions and methods for treating cellulose-based materials with micronized additives (2018-04-10),

15. 9775350 - Micronized wood preservative formulations in organic carriers (2017-10-03),

Founded in 1988, Koppers Performance Chemicals Inc. is a leading global provider of products and solutions for the treated wood industry. With a strong focus on research and development, the company offers a wide range of performance chemicals and treatment processes that enhance the durability and functionality of wood products. Koppers Performance Chemicals Inc. serves customers in various industries, including construction, infrastructure, and transportation.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

21 Patents

#94 in Pittsburgh, PA

#562 in Pennsylvania

#15,151 in US

#29,031 in the World

Pittsburgh, PA, United States of America

Koppers Performance Chemicals Inc.

Forward Citations = 16

19 inventors:

Jun Zhang (19 out of 71 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. Xinhao Howard Gao (4 out of 4 patents)

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