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:
Jun. 24, 2003
Filed:
Sep. 28, 2001
Dieter Meiss, Augsburg, DE;
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, München, DE;
Abstract
A method for recycling thoriated tungsten objects such as thoriated tungsten scrap resulting from the fabrication of electrodes for lamps. The thoriated tungsten objects are oxidized, homogenized by mixing and chemically reduced under a hydrogen gas atmosphere to form thoriated tungsten. This method eliminates the need to separate the tungsten from its dopants. The thoriated tungsten obtained as the end product is returned to the production process and is preferably used as a raw material for the production of welding electrodes or thoriated tungsten discharge lamp electrodes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile