Our Patents
Virtual Patent Marking
This website provides notice to the public that certain products of Koppers Performance Chemicals Inc. (Koppers) are covered by one or more U.S. Patents and their foreign counterparts. Additional patent applications may be pending in the United States and elsewhere. The information is updated periodically and may not list all Koppers products that are covered by patents or every patent that covers any Koppers product.
This site is not intended to provide legal advice and does not waive any legal rights or remedies that Koppers may have.
InPRO® DCOI (50%)
U.S. Patent Nos. 12370716, 12491658, 12636810
MicroPro®
U.S. Patent Nos. 7674481; 7674481C1; 11140901; 7411080; 7411080C1; 9775350; 8747908; 11882833; 12279615;
MicroShades®
U.S. Patent Nos. 11072086
NatureWood®
U.S. Patent Nos. 11102980; 11173626; 7476371