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:
Nov. 16, 2004
Filed:
Mar. 31, 2003
Applicant:
Inventors:
Thomas Peter Tufano, Wilmington, DE (US);
Michael Brian Coxey, Elkton, MD (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 1/508 ; C09K 1/300 ; C09K 1/304 ; C23F 1/14 ; C23F 1/18 ;
U.S. Cl.
CPC ...
C01B 1/508 ; C09K 1/300 ; C09K 1/304 ; C23F 1/14 ; C23F 1/18 ;
Abstract
A solution comprising potassium hydrogen peroxymonosulfate containing an elevated level of KHSO and having a weight ratio of SO to SO of greater than 1.0:1, and its use in microetching metal substrates is disclosed.