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Expired Canadian patentCanada

Industrial gelling agent for hydrophobic organic liquids

CA 1279802 C · Owner: Minnesota Mining And Manufacturing Company · Inventors: John, Gunther

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

Abstract, Industrial gelling agent for hydrophobic organic liquids, particularly mineral oil or the like on the basis, of organic poly-oxo-aluminum salts of fatty acids and organic reactants reacting therewith, particularly reactants having hydroxyl or carboxyl groups, characterized in that the gelling agent is a solid matter obtained by the reaction of correspondingly selected poly-oxo-aluminum salts and reactants.

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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 February 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 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.
FiledJune 30, 1986
GrantedFebruary 5, 1991
Term endedFebruary 5, 2008
Patent numberCA 1279802 C
Classification (IPC)B01J13/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJune 30, 1986Patent grantedFeb 5, 1991Term endedFeb 5, 2008

Sources & verification

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