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:
Apr. 17, 1990
Filed:
Mar. 01, 1989
Klaus Ellrich, Worthsee, DE;
Oswald Gasser, Seefeld, DE;
Rainer Guggenberger, Hechendorf, DE;
Erich Wanek, Seefeld, DE;
Abstract
For the attachment of components using the SMT method a procedure is suggested in which the adhesive used is activated prior to fitting of the components to the circuit board by irradiation with light having a wavelength in the range of 200 to 600 nm to such an extent that the desired initial tackiness is maintained and there is no formation of skin on the surface of the adhesive. This makes it possible to cause the adhesive composition to fully cure in a shorter time and at lower temperature than has been possible so far without the wettability of the adhesive during the fitting of the components to the circuit board being impaired.