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:
Oct. 20, 1992
Filed:
Dec. 21, 1990
Takamasa Okumura, Nagato, JP;
Kohmei Kawaguchi, Nagoya, JP;
Masataka Aoki, Mine, JP;
Takashi Nagasaka, Anjo, JP;
Tohru Nomura, Ohbu, JP;
Yoshiyuki Miyase, Okazaki, JP;
Sumitomo Metal Ceramics Inc., Yamaguchi, JP;
Nippon Denso Co., Ltd., Aichi, JP;
Abstract
A multilayer ceramic substrate having improved mechanical and electrical properties and suitable for use to form a hybrid integrated circuit and a process for the manufacture thereof. The multilayer ceramic substrate has at least one layer of a first conductor based on a refractory metal as an internal conductor layer and at least one layer of a Cu-based second conductor as a surface conductor layer, wherein the second conductor layer is connected to the first conductor layer through a metallic layer formed by coating with a metalloorganics paste containing one or more metals selected from the group consisting of Pt, Pd, Ni, Cu, Au, Rh, Ru, Re, Co, and Ir followed by firing in an inert or reducing atmosphere.