Refractory connection and induction coil therefor
CA 2005657 C · Owner: Bruckner, Raimund · Inventors: Bruckner, Raimund
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a refractory connection between a vessel containing a metal melt and an outlet device for the metal melt particularly a refractory discharge for molten steel. In order to prevent freezing of the metal melt and deposits of components of the metal melt on the inner wall surface of the discharge wall, a discharge inner wall is made wholly or partially of a ceramic material which is electrically conductive at least at a temperature at which the metal remains liquid and which may be inductively heated by means of an induction coil.
Read the whole patent
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
- Filed December 15, 1989 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2011.
- 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.