Patent EP0478937A1 successfully refreshed from Google Patents.
EP0478937A1
Expired / Lapsed
EP
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Ceramic material for covering metallic dental prosthesis
Assignee: Ducera Dental-Gesellschaft mbH
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Filing: 1991-08-16
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Granted: —
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Expires: 2011-08-16
Abstract
Abstract For dental prostheses of low-melting gold alloys and titanium alloys, ceramic masses having processing temperatures of about 770 DEG C and coefficients of thermal expansion of 8-9 x 10<-6> K<-1> and 16-17.5 x 10<-6> K<-1> are required for blending. Such ceramic masses are composed of: SiO2, 4 to 15% by weight of Al2O3, 0.7 to 2.5% by weight of B2O3, 0 to 0.9% by weight of Sb2O3, 0 to 0.5% by weight of CeO2, 0 to 2.5% by weight of BaO, 0 to 0.5% by weight of CaO, 7 to 12% by weight of K2O, 6 to 11% by weight of Na2O, 0.55 to 1.4% by weight of Li2O and 0.2 to 1.0% by weight of F2.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 06:30
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/24; A; A61; A61K; A61K6/00; A61K6/20; A61K6/80; A61K6/802; A61K6/822; A61K6/84; A61K6/844; C03C8/02; C03C8/06
Claims Analysis
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References Cited (Backward Citations)
FR955091A
Cited
US4349692A
Cited
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