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Expired Canadian patentCanada

Production of metal strip and sheet

CA 1258760 A · Owner: Mixalloy Limited · Inventors: Mathers, Roy

CIPO record

Overview

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

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Abstract From the Canadian patent

A process for producing strip from particulate metallic material in which a slurry comprising a suspension of particulate metallic material in a solution of water containing a film forming binder material is deposited as a coating onto a support surface and is heated to gel the binder and to dry the slurry coating, the dried strip subsequently being removed from the support surface and rolled to effect compaction thereof. The ratio of particulate metallic material to water content of the slurry lies within the range 3.4 : 1 and 4.2 : 1 to ensure good flowability of the slurry coating and to produce the required flat profile in the rolled strip.

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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 August 29, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 29, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 7, 1985
GrantedAugust 29, 1989
Term endedAugust 29, 2006
Patent numberCA 1258760 A
Classification (IPC)B22F3/18 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedAug 7, 1985Patent grantedAug 29, 1989Term endedAug 29, 2006

Sources & verification

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