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Expired Canadian patentCanada

Electrically heated metal melt cell

CA 2178762 C · Owner: Musket System Design And Control Inc. · Inventors: Le Gras, Brian W.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Process and Apparatus for a fully automated magnesium melt system. Raw magnesium ingots are moved through a preheater chamber heated by radiant heat panels where they are thoroughly dried by being controllably heated to a temperature range of about 150°C to 250°C preferably 200°C to 225°C before they are introduced into a melt cell also referred to as a furnace. The ingots are, monitored for temperature by an infra red temperature sensor or a direct contact type thermocouple and this determines whether the ingot is ready to be charged into the furnace. A furnace metal level probe monitors the metal level and a control unit causes ingot charging as determined by a process level set point or …

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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

  • Filed June 6, 1995 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 6, 1995
GrantedApril 20, 1999
Term endedJune 6, 2015
Patent numberCA 2178762 C
Classification (IPC)F27B14/14 +2 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedJune 6, 1995Patent grantedApril 20, 1999Term endedJune 6, 2015

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.