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Expired Canadian patentCanada

Method for continuous casting of light-alloy ingots

CA 1194675 A · Owner: Dobatkin, Vladimir I. · Inventors: Andreev, Andrei D.; Khodakov, Pavel E.; Junyshev, Viktor K.

CIPO record

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Abstract From the Canadian patent

A method for continuous casting of light-alloy ingots consists in pouring a melt, acting upon the melt by ultrasound using at least one radiator to purify the melt and to refine the structure of an ingot solidifying from the melt uniformly throughout the cross section of the melt at an intensity of 2 to 60 W/cm2 as a function of the cross sectional area of the solidifying ingot the radiator, being immersed into the melt to a depth equal to between 1/12-th and 1/4-th of the wavelength of the sound in the material of the melt and melt temperature being maintained by 10 to 150°C above the liquidus temperature of the material of the melt, then withdrawing the ingot. - 12 -

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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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
  • 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 10, 1981
GrantedOctober 8, 1985
Term endedOctober 8, 2002
Patent numberCA 1194675 A
Classification (IPC)B22D27/20

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedJune 10, 1981Patent grantedOct 8, 1985Term endedOct 8, 2002

Sources & verification

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