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. 20, 2002
Filed:
Jul. 30, 1998
Applicant:
Inventors:
Eric J. Woolsey, Chandler, AZ (US);
Douglas G. Mitchell, Tempe, AZ (US);
George F. Carney, Tempe, AZ (US);
Francis J. Carney, Jr., Gilbert, AZ (US);
Cary B. Powell, Tempe, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B 1/300 ;
U.S. Cl.
CPC ...
H01B 1/300 ;
Abstract
A method of manufacturing electronic components includes disposing a top metal layer ( ) comprised of solder over a bottom metal layer ( ) comprised of titanium or tungsten, and selectively etching the bottom metal layer ( ) over the top metal layer ( ) with an etchant mixture ( ) comprised of an etchant, an additive to control the temperature of the etchant mixture ( ), and another additive to reduce the redeposition of the top layer ( ).