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Expired Canadian patentCanada

Viscoelastic cleaning compositions

CA 1319075 C · Owner: The Clorox Company · Inventors: Smith, William L.

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

A thickened aqueous cleaning composition is viscoelastic and has utility as a drain opening composition or as a hard surface cleaner having a cleaning-effective residence time on non-horizontal surfaces. In one embodiment the composition comprises a cleaning active, a quaternary ammonium compound and an organic counterion. In another embodiment the, viscoelastic quality of the composition is advantageously utilized as a drain opener which rapidly penetrates standing water with minimal dilution to deliver active to the clog material.

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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 June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 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.
FiledSeptember 16, 1988
GrantedJune 15, 1993
Term endedJune 15, 2010
Patent numberCA 1319075 C
Classification (IPC)C11D17/08 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 16, 1988Patent grantedJune 15, 1993Term endedJune 15, 2010

Sources & verification

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