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Expired Canadian patentCanada

Arrangement for use in the thermal analysis and modification of molten metal

CA 1283779 C · Owner: Backerud, Stig Lennart · Inventors: Backerud, Stig Lennart

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

An arrangement for use when thermally analyzing and modifying molten metal, by recording solidification data and controlling the structural modification of the molten metal on the basis of such data. The arrangement includes a sampling container made from a material which remains substantially stable at the temperature of the molten metal and which is adapted to receive at least one thermoelement for recording the solidification data. Means are also provided for taking a sample of the molten metal with the aid of the container, and for moving the sample to an area in which substantially the same conditions prevail. In addition, the arrangement includes recording means and means for …

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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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 23, 1987
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283779 C
Classification (IPC)C21C1/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 23, 1987Patent grantedMay 7, 1991Term endedMay 7, 2008

Sources & verification

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