Method for measurement of amount of liquid metal in casting furnace
CA 2218915 C · Owner: Berge, Arnulf · Inventors: Berge, Arnulf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for measuring the amount of liquid metal contained in tiltable casting furnaces. It is established and maintained a reference curve for the amount of metal in the furnace as a function of the furnace tilting angle at a reference level for metal at the furnace outlet opening and that the amount of metal contained in the casting furnace at any furnace tilting angle during the casting process is read from the reference curve after correction due to deviation of actual metal level from the reference metal level.
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 April 19, 1996 and granted October 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2018.
- 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.