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:
Mar. 14, 2000
Filed:
Sep. 19, 1997
Applicant:
Inventors:
Barbara Lehner, Munich, DE;
Recai Sezi, Roettenbach, DE;
Assignee:
Siemens Aktiengesellscaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B35B / ; H05K / ; C08F / ;
U.S. Cl.
CPC ...
428209 ; 428206 ; 427386 ; 427558 ; 427559 ; 4273855 ; 427 96 ; 156 48 ; 174260 ; 174256 ; 522 83 ; 522148 ; 522170 ;
Abstract
UV-hardenable and thermally hardenable epoxy resins for the underfilling process in electrical and electronic components are provided. A new casting resin component has an increased storage stability at room temperature of at least 6 months and improved characteristics for the underfilling process including faster hardening and lower viscosity. Filler material with a maximum grain size of 20 .mu.m and a siloxane component are provided in addition to the casting resin formulation.