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. 03, 1998
Filed:
Sep. 19, 1996
Applicant:
Inventors:
Frank John Martin, North Kelvinside, GB;
Brian Robertson, Gourock, GB;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
22818021 ; 228231 ; 148528 ;
Abstract
A method for increasing the strength of a solder joint between a nickel-iron lead frame of an electronic circuit module and a copper pad of a printed circuit board on which the module is mounted includes baking the joint for at least one hour at a temperature in the range 373K to 456K. The baking step is found to significantly increase the strength of the joint.