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. 27, 2013
Filed:
Jun. 03, 2008
Kesheng Feng, Cheshire, CT (US);
Ming DE Wang, Naugatuck, CT (US);
Colleen Mckirryher, Thomaston, CT (US);
Steven A. Castaldi, Torrington, CT (US);
Kesheng Feng, Cheshire, CT (US);
Ming De Wang, Naugatuck, CT (US);
Colleen Mckirryher, Thomaston, CT (US);
Steven A. Castaldi, Torrington, CT (US);
Other;
Abstract
A composition for providing acid resistance to copper surfaces in the production of multilayered printed circuit boards. The composition comprises an acid, an oxidizer, a five-membered heterocyclic compound and a thiophosphate or a phosphorous sulfide compound. In a preferred embodiment, the phosphorous compound is phosphorus pentasulfide. The composition is applied to a copper or copper alloy substrate and the copper substrate is thereafter bonded to a polymeric material.