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Expired Canadian patentCanada

Stearate-based dryer-added fabric softener sheet

CA 1315048 C · Owner: Creative Products Resource Associates, Ltd. · Inventors: Kellett, George W.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A fabric softener sheet for in-dryer use is provided which comprises water, an organic solvent and, an amount of an alkali metal stearate effective to dimensionally-stabilize the sheet, having uniformly distributed in said sheet an effective amount of a quaternary amine fabric softening agent.

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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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 1989
GrantedMarch 30, 1993
Term endedMarch 30, 2010
Patent numberCA 1315048 C
Classification (IPC)B05D3/12 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 10, 1989Patent grantedMarch 30, 1993Term endedMarch 30, 2010

Sources & verification

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