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Expired Canadian patentCanada

Dryer-added fabric treating article

CA 1331908 C · Owner: Colgate-Palmolive Canada Inc. · Inventors: Fletcher, John L.

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

This invention relates to the treating of clothes in a laundry dryer, especially to the softening and the elimination of static. More specifically, the subject invention relates to a fabric treating article comprising a core of fiber strands said core impregnated with a softener and/or antistat active and means for retention of said fiber strands in said article throughout the dryer operation. In a preferred embodiment the, article further comprises cover means for the fiber core said, cover means being removed by the user prior to use or being removable by heat and/or moisture during use of the article in the dryer.

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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 September 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 13, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 1, 1988
GrantedSeptember 13, 1994
Term endedSeptember 13, 2011
Patent numberCA 1331908 C
Classification (IPC)D06M23/02 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 1, 1988Patent grantedSep 13, 1994Term endedSep 13, 2011

Sources & verification

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