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:
Dec. 08, 1981
Filed:
Nov. 01, 1976
Gunther Heimke, Mannheim, DE;
Reinhold Fritz, Stuttgart, DE;
Friedrichsfeld GmbH, Mannheim, DE;
Abstract
A superstructure-fastening dental implant formed of Al.sub.2 O.sub.3 -ceramic material having a distal end and a proximal end opposite to the distal end thereof and including a cylindrical shaft formed with constrictions at least partly defined by annular surfaces formed on the shaft, the annular surfaces extending perpendicularly to the axis and facing toward the proximal end of the dental implant, and means including a threaded bushing for anchoring a superstructure at the distal end of the dental implant, the proximal end of the dental implant being rounded and in the form of a spherical calotte having a smooth and uninterrupted surface.