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:
Jul. 17, 2007
Filed:
Oct. 19, 2006
Gerhard Wötting, Coburg, DE;
Mathias Herrmann, Coswig, DE;
Grit Michael, Dresden, DE;
Stefan Siegel, Dresden, DE;
Lutz Frassek, Rödenthal, DE;
Gerhard Wötting, Coburg, DE;
Mathias Herrmann, Coswig, DE;
Grit Michael, Dresden, DE;
Stefan Siegel, Dresden, DE;
Lutz Frassek, Rödenthal, DE;
H.C. Starck Ceramics GmbH & Co. KG, Selb, DE;
Abstract
The present invention is directed to bearings produced from a silicon nitride material. The silicon nitride material consists of a sintering aid selected from the group consisting of AlOand YO, silicon dioxide, and optionally, up to 10 mole %, based on the amount of silicon nitride, of an additive that reacts with silicon nitride, said additive selected from the group consisting of TiO, WO, MoOand mixtures thereof.