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Expired Canadian patentCanada

Detergent plus softener with imidazoline ingredient

CA 1297375 C · Owner: The Procter & Gamble Company · Inventors: Baker, Ellen Schmidt; Tucker, James Robinson; Hartman, Frederick Anthony

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

Disclosed are detergent compositions containing an imidazoline component. These detergent compositions provide excellent cleaning as well as fabric care benefits. The imidazoline component consists of particles having an average particle diameter of from about 20 to about 200 microns. These granular detergent compositions may optionally contain clay materials detergent, builders, chelating agents, and/or peroxygen bleaching agents.

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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 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 22, 1987
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297375 C
Classification (IPC)C11D3/28 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 22, 1987Patent grantedMarch 17, 1992Term endedMarch 17, 2009

Sources & verification

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