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. 18, 1992
Filed:
Oct. 16, 1989
Eberhard Findeisen, 4156 Willich 1, DE;
Klaus Frank, 4156 Willich 1, DE;
Wilfried Becker, 4156 Willich 1, DE;
Fritz Muller, 4156 Willich 1, DE;
Other;
Abstract
To develop a process for manufacturing cast tungsten carbide spheres, without any content of spattering material, as solid spheres with a bulk weight of 0.5-11.5 g/cm.sup.3 for cast tungsten carbide spheres from a screen fraction, and with a granular distribution of 40 .mu.m to 2,000 .mu.m, tungsten carbide is heated to about 150.degree.-300.degree. C. above the melting point, and then the cast tungsten carbide is smelted and granulated in stationary inert gas.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile