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:
Jul. 20, 1982
Filed:
Jul. 14, 1980
Applicant:
Inventors:
Derry J Dubetsky, Wappingers Falls, NY (US);
Lester W Herron, Hopewell Junction, NY (US);
Raj N Master, Wappingers Falls, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C03B / ; C04B / ;
U.S. Cl.
CPC ...
156 89 ; 264 58 ; 264 61 ; 264 62 ; 264 64 ; 264 65 ; 264 66 ; 427 96 ;
Abstract
The obtention of enhanced planarity and dimensional integrity of sintered glass-ceramic substrates containing multi-level distribution of conductor patterns (e.g. copper) by a two stage firing of the green sheets, first between the anneal and softening points of crystallizable glass particles, interrupting the firing, superimposing selected light weights on the substrates, and heating through the coalescing temperatures to the crystallization of the glass.