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:
Apr. 08, 2008
Filed:
Jun. 21, 2004
Leonid Natan Shekhter, Ashland, MA (US);
Edward V. Mccormick, Churchville, NY (US);
Leah F. Simkins, Arlington, MA (US);
Edward K. Schiele, Libertyville, IL (US);
Leonid Natan Shekhter, Ashland, MA (US);
Edward V. McCormick, Churchville, NY (US);
Leah F. Simkins, Arlington, MA (US);
Edward K. Schiele, Libertyville, IL (US);
H.C. Starck Inc., , DE;
Abstract
A method of producing a refractory metal powder by (A) combining (i) an oxide particle component and (ii) a reducing agent; (B) forming a substantially uniform mixture of (i) and (ii); (C) continuously feeding the mixture into a furnace; (D) igniting the mixture at a reaction zone and starting a reaction that is sufficiently exothermic to form a high temperature flash; (E) starting a reaction that is sufficiently exothermic to form a high temperature self-sustaining flash; and (F) producing a free-flowing reduced oxide powder.