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:
Aug. 20, 1996
Filed:
Mar. 23, 1995
Applicant:
Inventors:
Joachim Nagel, Friedrichsdorf, DE;
Albert Erdrich, Bad Nauheim, DE;
Assignee:
Heraeus Kulzer GmbH, Hanau, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ; C08K / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
523115 ; 523212 ; 523220 ; 524450 ; 524493 ; 524561 ; 433229 ;
Abstract
An artificial tooth of polymethacrylate, barium aluminum silicate glass and microfine silicon dioxide is described that imitates the natural tooth in its essential properties, namely mechanical strength and abrasion performance as well as transparency and depth of color. The tooth contains 15 to 35 weight % polymethacrylate, 35 to 75 weight % barium aluminum silicate glass with a mean particle size of from 0.1 to 5 micrometers, and 5 to 25 weight % silicon dioxide with a mean particle size of from 0.01 to 0.2 micrometers. In addition pigments necessary to match cosmetic requirements, are normally added as necessary.