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:
Nov. 09, 2010
Filed:
Dec. 19, 2005
Brian L. Bischoff, Knoxville, TN (US);
Theodore G. Sutton, Kingston, TN (US);
Roddie R. Judkins, Knoxville, TN (US);
Timothy R. Armstrong, Clinton, TN (US);
Kenneth D. Adcock, Harriman, TN (US);
Brian L. Bischoff, Knoxville, TN (US);
Theodore G. Sutton, Kingston, TN (US);
Roddie R. Judkins, Knoxville, TN (US);
Timothy R. Armstrong, Clinton, TN (US);
Kenneth D. Adcock, Harriman, TN (US);
Worldwide Energy, Inc. of Delaware, Oak Ridge, TN (US);
Abstract
A method for treating a porous item constructed of metal powder, such as a powder made of Series 400 stainless steel, involves a step of preheating the porous item to a temperature of between about 700 and 900° C. degrees in an oxidizing atmosphere and then sintering the body in an inert or reducing atmosphere at a temperature which is slightly below the melting temperature of the metal which comprises the porous item. The thermal stability of the resulting item is enhanced by this method so that the item retains its porosity and metallic characteristics, such as ductility, at higher (e.g. near-melting) temperatures.