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:
May. 21, 2002
Filed:
Jan. 06, 1999
Applicant:
Inventor:
Heiner Lichtenberger, Williamsville, NY (US);
Assignee:
Williams Advanced Materials, Inc., Buffalo, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 3/900 ; B23K 3/512 ;
U.S. Cl.
CPC ...
B21D 3/900 ; B23K 3/512 ;
Abstract
A method of making an integral plated and solder clad cover lid for electronic packages is disclosed. The cover lid is plated and or clad with a first corrosion resistant and solderable material and is clad with a solder material on one side. The cladded substrate is stamped and then plated with a second corrosion resistant and solderable material. The second material is subsequently sintered and preferentially diffused into the solder material resulting in a visual distinction between the solder side of the cover lid and the backing side.