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US 5,153,077 AGranted
Ceramic-metal composite substrate
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsYoshihiro Kashiba, Masaru Okada
Life of this patent
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Abstract
A ceramic-metal composite substrate which comprises: a ceramic base member; metal members of a material selected from the group consisting of copper and copper alloys, which is bonded to said ceramic base member; and a constraining member bonded to said metal member, said constraining member being made up of a metal selected from the group consisting of molybdenum, tungsten and alloys thereof, and having a thickness in a range of from 1/20 to 1/3 of the thickness of said metal member.
Claims5
A ceramic-metal composite substrate, which comprises:
- a ceramic base member:
- at least one copper-based metal member which is bonded to said ceramic base member;
- and
- a constraining member bonded to said at least one copper-based metal member, said constraining member being a metal substance selected from the group consisting of molybdenum, tungsten and alloys thereof and having a thickness in a range of from 1/20 to 1/3 of the thickness of said metal member.
1 more element
Dependencies are inferred from the claim text.