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Expired Canadian patentCanada

Penetrating topical pharmaceutical compositions

CA 1302269 C · Owner: The Procter & Gamble Company · Inventors: Kasting, Gerald Bruce; Snyder, William Earl; Massaro, Ellen Rand

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

Topical pharmaceutical compositions containing a specific 6-amino-1,2-dihydro-1-hydroxy-2-iminopyrimidine component and a penetration-enhancing vehicle are disclosed. The vehicle comprises a binary combination of a C3-C4 diol or C3-C6 triol and a specific C1-6 or C1-8 alcohol polar lipid compound. The vehicle provides marked transepidermal and percutaneous delivery of the iminopyrimidine compound. These compositions when applied, topicaily, act to stimulate the growth of mammalian hair on the body.

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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 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.
FiledJune 12, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302269 C
Classification (IPC)A61K31/53 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 12, 1987Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

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