Method of and apparatus for tapping a furnace containing a melt to be tapped
CA 1208006 A · Owner: Siemens Aktiengesellschaft · Inventors: Schafer, Jurgen; Dietze, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
10 -, ABSTRACT OF THE INVENTION, "A METHOD OF AND APPARATUS FOR TAPPING A FURNACE CONTAINING A MELT TO BE TAPPED", The invention relates to a method of and apparatus for tapping a furnace (1) containing a melt to be tapped, e.g. silicon prepared by the reduction of technical quality silicon dioxide with carbon. The furnace (1) has a tapping pipe (5) which is made of graphite and is electrically heated, so that material contained in the tapping pipe (5) is converted into the liquid phase and the melt can thus run out of the furnace (1) through the tapping pipe (5). Contamination of the melt is thus avoided.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.