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:
Jan. 11, 2005
Filed:
Feb. 11, 2002
Applicants:
Dan Lillie, Garfield Heights, OH (US);
Jiangtao Wang, Cleveland Heights, OH (US);
Inventors:
Dan Lillie, Garfield Heights, OH (US);
Jiangtao Wang, Cleveland Heights, OH (US);
Assignee:
Nikko Materials USA, Inc., Chandler, AZ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B44C 122 ; C03C 1500 ; C03C 2568 ; C23F 100 ; C23F 300 ;
U.S. Cl.
CPC ...
Abstract
A resistive etching solution containing thiourea, which is particularly suitable for etching an electrically resistive material comprised of a nickel-chromium alloy. The resistive etching solution allows for fast and effective etching of a nickel-chromium alloy in cases where the ratio of (a) copper surface area to (b) nickel/chromium surface area, is relatively large, and where fine feature etching is desired.