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:
Jun. 20, 2006
Filed:
Nov. 10, 2003
Ying Ding, Southbury, CT (US);
Ronald N. Redline, Prospect, CT (US);
Richard C. Retallick, West Hartford, CT (US);
Mark Wojtaszek, Canton, CT (US);
Ying Ding, Southbury, CT (US);
Ronald N. Redline, Prospect, CT (US);
Richard C. Retallick, West Hartford, CT (US);
Mark Wojtaszek, Canton, CT (US);
Other;
Abstract
The present invention sets forth an improved method of microetching a metal substrate by contacting the substrate with an aqueous composition comprising a sodium persulfate or hydrogen peroxide oxidizing agent, acid, and one or more additives. When the oxidizing agent is sodium persulfate, the one or more additives generally comprise an aliphatic saturated dicarboxylic acid. When the oxidizing agent is hydrogen peroxide, the one or more additives generally comprise a stabilizer and amino tris(methylene phosphonic acid).