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:
Jun. 09, 1998
Filed:
May. 30, 1996
Eberhard Siegfried Dittman, Granby, CA;
Mukund Kantilal Saraiya, Endwell, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A machine for connecting leads of a substrate to solder pads, the machine including a motor moving a conveyor for automatically positioning the substrate in the machine so that a bottom side of the substrate has a lead placed in contact with a solder pad without flux for reflow soldering. Additionally, a laser is present to heat the solder pad in an atmosphere of an inert gas mixed with formic acid for reflow soldering of the lead to the reflowed solder pad. A probe can be used to press the lead against the solder pad which may be made of Molybdenum to prevent solder adhesion. The solder pad can be made of 20% tin and 80% lead.