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. 19, 2005
Filed:
Aug. 01, 2003
Kriss Allen Bennett, Torrance, CA (US);
Roy Tom Coyle, Redondo Beach, CA (US);
Kriss Allen Bennett, Torrance, CA (US);
Roy Tom Coyle, Redondo Beach, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
Ceramic substrates () for microelectronic modules are formed in multiple layers (&) fused into a unitary one-piece assembly. The layers contain the same ceramic material but in different purity so that one outer layer () is optimal in composition for bonding to a thick film conductor () and the other outer layer () is optimal in composition for bonding to a thin film conductor (). In a dual composition substrate embodiment one layer is formed of a 96% alumina composition and the second layer is formed of a 99.6% alumina composition.