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:
Nov. 20, 2007
Filed:
Jun. 24, 2003
Klaus Krumbholz, Langen, DE;
Klaus Krumbholz, Langen, DE;
Degudent GmbH, Hanau, DE;
Abstract
An opalescent glass-ceramic product, especially for use as a dental material or as an additive to or component of dental material, including SiO, AlO, PO, NaO, KO, CaO and Me(IV))O. In order to obtain improved opalescence with improved transparency, in addition to fluorescence, thermal expansion and a combustion temperature adapted to other materials, the opalescent ceramic product is completely or substantially devoid of ZrOand TiO, such that the Me(II)O content in the glass ceramic is less than approximately 4 wt % and the Me(IV)Ocontent amounts to approximately 0.5-3 wt %. The invention also relates to a method for the production of the opalescent glass-ceramic product.