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:
Dec. 08, 1998
Filed:
Mar. 03, 1997
Katsuya Kawakami, Toyoake, JP;
Junzo Fukuta, Nagoya, JP;
Sumitomo Metal Electronics Devices Inc., Mine, JP;
Abstract
A low-temperature fired ceramic circuit substrate includes a plurality of laminated insulating layers each formed of a low-temperature fired ceramic fired at a temperature ranging between 800 and 1,000.degree. C., an inside layer wiring conductor formed of a conductive material of Ag system which is mainly composed of Ag, the inside layer wiring conductor being disposed in the inside insulating layer, a surface layer wiring conductor formed of a conductive material of Au system which is mainly composed of Au, the surface layer wiring conductor being disposed on the surface insulating layer, and an intermediate metal layer formed of a thick film paste of a conductive material of Au/Ag system which is mainly composed of Au/Ag, the intermediate metal layer being interposed between the inside layer wiring conductor and the surface layer wiring conductor.