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Expired Canadian patentCanada

Self-lather generating shaving composition

CA 1263607 C · Owner: Marra, Dorothea C. · Inventors: Spitzer, J. George; Marra, Dorothea C.; Osipow, Lloyd L.

CIPO record

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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 shaving preparation is provided which has a sub-atmospheric vapor pressure at ambient temperature and which generates a lather when applied to the skin. The composition comprises a water-insoluble volatile organic liquid having a vapor pressure substantially below atmospheric pressure an, aqueous soap solution and a surface active agent which together promote the volatilization of the organic liquid thereby, generating a lather as well as reducing the tendency of the volatile organic liquid to cause smarting of the skin. The compositions of this invention are capable of being packaged in a collapsible tube without premature expansion in the tube during storage, shipment and use.

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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 December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 29, 1985
GrantedDecember 5, 1989
Term endedDecember 5, 2006
Patent numberCA 1263607 C
Classification (IPC)A61K8/41 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 29, 1985Patent grantedDec 5, 1989Term endedDec 5, 2006

Sources & verification

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