Back to results
US 5,709,823 AGranted
Method for producing sonotrodes
AssigneeThera Patent GmbH & Co. KG Gesellschaft fur Industrielle Schutzrechte
InventorRainer Hahn
Life of this patent
Estimating the term…
Abstract
A dental restoration part is produced from a ceramic material by a method ultrasonic working. The method includes forming a negative mold from a master sonotrode, forming a pre-working sonotrode from the negative mold, and ultrasonically working a workpiece using the pre-working sonotrode. The master sonotrode is then used to ultrasonically work the workpiece to form the dental restoration part.
Claims11
A method of producing a dental restoration part from a ceramic material by means of ultrasonic working, comprising:
- (a) forming a negative mold from a master sonotrode,
- (b) forming a pre-working sonotrode from said negative mold,
- (c) ultrasonically working a workpiece using said pre-working sonotrode, and
- (d) ultrasonically working said workpiece made of ceramic material using said master sonotrode to form said dental restoration part.
1 more element
Dependencies are inferred from the claim text.