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. 10, 2002
Filed:
Dec. 14, 1999
Andreas Lackner, Reutte/Tirol, AT;
Andreas Filzwieser, Zeltweg, AT;
Plansee Tizit Aktiengesellschaft, Tirol, AT;
Abstract
The invention concerns a gas carburizing method for production of fine-grained tungsten carbide (WC) powder in installations for fluidized bed reaction starting from free-flowing tungsten or tungsten oxide-containing powder with an average particle size d >10 &mgr;m in a single process step with a specific process temperature and process gas mixture with a carbon activity <1 and as close as possible to 1. The method is suitable for particularly economical WC production on an industrial scale.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile