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:
Feb. 01, 2005
Filed:
Nov. 06, 2000
Otto W. Stenzel, Wüstenrot-Neuhütten, DE;
Klaus Czerwinski, Iggingen, DE;
Iris Postler, Leonberg, DE;
Bernd Reinsch, Ludwigsburg, DE;
Otto W. Stenzel, Wüstenrot-Neuhütten, DE;
Klaus Czerwinski, Iggingen, DE;
Iris Postler, Leonberg, DE;
Bernd Reinsch, Ludwigsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention relates to a method of fabrication and a product, which forms a composite body made of metal and a porous ceramic blank, which adjoins the metallic portion and is infiltrated by the metal, wherein a gradient in properties across the composite portion of the composite body is formed by a heat treatment that reduces some of the oxides across the thickness of the porous ceramic blank. In one embodiment, a gradient from substantial chemical reaction to incomplete chemical reaction of the reducible oxides of the blank with the infiltrated metal is formed inside the composite portion.