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:
Sep. 19, 2006
Filed:
Jun. 19, 2003
Applicants:
Jürgen Eckhart, Althofen, AT;
Jürgen Leitner, Althofen, AT;
Kurt Rabitsch, Althofen, AT;
Inventors:
Assignee:
Treibacher Industrie AG, Treibach-Althofen, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 31/34 (2006.01); C04B 35/56 (2006.01); C22C 29/02 (2006.01); C22C 29/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method of producing tungsten carbide by gas phase direct carburization of a tungsten-oxide containing starting material, wherein the starting material is reacted with a reaction gas at an increased temperature. The starting material is first heated to a first temperature greater than or equal to 600° C., before reacting with a reaction gas while increasing the temperature to a second temperature that does not exceed 850° C., wherein the reaction gas is selected from the group consisting of CO and a COHgas mixture comprising up to 20% by volume H.