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. 01, 1995
Filed:
Feb. 28, 1994
Applicant:
Inventor:
Joseph P Mennucci, Manville, RI (US);
Assignee:
Technical Materials, Inc., Lincoln, RI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; H01L / ;
U.S. Cl.
CPC ...
29827 ; 205140 ; 205145 ; 205206 ; 205222 ;
Abstract
A fabrication method and leadframe construction in which the leadframe is formed by selectively removing portions of a multilayer clad strip to expose a selected pattern of a conductive metal to conform to the desired application of the leadframe. The clad strip may be formed of a base layer of copper alloy, a conducting layer of aluminum or aluminum alloy, and an upper layer of copper or a copper alloy. A layer of tin or lead-tin alloy may be plated onto the upper layer.