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Expired Canadian patentCanada

Quaternized aminoamide-modified waxes

CA 1284148 C · Owner: Schleusener, Eckart · Inventors: Schleusener, Eckart; Danner, Bernard

CIPO record

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Abstract From the Canadian patent

A quaternized aminoamide-modified wax obtainable by amidating with a polyamine containing a single primary amino group a carboxy, group-containing, oxidized hydrocarbon wax which may be partially saponified, and quaternizing at least one amino group of the resulting aminoamide-modified wax, optionally in admixture with a non-oxidized paraffin wax may be applie preferably in the form of, an aqueous dispersion containing a dispersing agent to a fibrous, substrate to improve its workability in mechanical processes.

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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 14, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 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.
FiledJuly 10, 1986
GrantedMay 14, 1991
Term endedMay 14, 2008
Patent numberCA 1284148 C
Classification (IPC)C07C237/10 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJuly 10, 1986Patent grantedMay 14, 1991Term endedMay 14, 2008

Sources & verification

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