Method of producing metal melts and an electric arc furnace therefor
CA 2084138 A1 · Owner: Mittag, Peter · Inventors: Berger, Harald; Steins, Johannes; Mittag, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method of producing metal melts in, particular a steel melt from scrap in an electric arc, furnace having at least one graphite electrode organic, substances are charged into the electric arc through a central longitudinal recess of the graphite electrode so as to reduce electrode consumption.
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 November 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2014.
- 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.