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Expired Canadian patentCanada

Benzyl alcohol for improved powdered cleansers

CA 1238546 A · Owner: The Procter & Gamble Company · Inventors: Siklosi, Michael P.

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 herein is an improved free flowing powdered abrasive cleanser comprising:, (a) 0.1% to 6% of a surfactant; (b) 0.5% to 40% benzyl alcohol;, (c) 20% to 95% of a water-insoluble abrasive material having particle diameters ranging from about 0.3 to about 0.001 millimeters; and, (d) 1% to 50% detergency buiider.

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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 28, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 28, 2005.
  • 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 24, 1985
GrantedJune 28, 1988
Term endedJune 28, 2005
Patent numberCA 1238546 A
Classification (IPC)C11D3/14 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedSep 24, 1985Patent grantedJune 28, 1988Term endedJune 28, 2005

Sources & verification

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