The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2021
Filed:
Aug. 28, 2018
Applicant:
Koppers Performance Chemicals Inc., Pittsburgh, PA (US);
Inventors:
Jun Zhang, Peachtree City, GA (US);
Peter Tham, Morrow, GA (US);
Assignee:
Koppers Performance Chemicals Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N 59/20 (2006.01); B27K 3/22 (2006.01); C09D 7/65 (2018.01); C09D 7/63 (2018.01); A01N 25/02 (2006.01); C09D 5/14 (2006.01);
U.S. Cl.
CPC ...
A01N 59/20 (2013.01); A01N 25/02 (2013.01); B27K 3/22 (2013.01); C09D 5/14 (2013.01); C09D 7/63 (2018.01); C09D 7/65 (2018.01);
Abstract
The present invention relates to a method for producing copper ammonia solutions by reacting a cuprous oxide with ammonia, carbon dioxide and an oxidant. The resulting copper-containing solution can then be used to formulate a variety of wood preserving products.