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. 24, 1981
Filed:
Jun. 30, 1980
Applicant:
Inventors:
Richard J Hetherington, Pine Plains, NY (US);
George E Melvin, Poughkeepsie, NY (US);
Stephen A Milkovich, Beacon, NY (US);
Ernest N Urfer, Hopewell Junction, NY (US);
Assignee:
International Business Machines Corp., Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
174 685 ; 361406 ; 361411 ;
Abstract
An improved multi-layer ceramic substrate for mounting semiconductor devices having a low incidence of cracks between metal filled surface vias, the substrate constructed with a top ceramic layer having a thickness that is at least 20 percent greater than the underlying sheets that embody a redistribution system.