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Expired Canadian patentCanada

Thin, flexible sanitary napkin

CA 1317701 C · Owner: The Procter & Gamble Company · Inventors: Osborn, Thomas Ward Iii

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

In accordance with the present invention a sanitary napkin, having a body surface and a garment surface and being comprised of an absorbent means undelayed by a liquid barrier means wherein the sanitary napkin is relatively highly flexible and has a capacity great enough to handle medium to high menstrual flows is provided. In a preferred embodiment the sanitary napkin, comprises, from the body surface down an apertured formed film, topsheet, an apertured nonwoven wipe acquisition sheet a, wet-laid tissue, a superabsorbent core and a barrier sheet. Preferably, the central width of the absorbents is at least about 6.5 centimeters and the caliper of the napkin as a whole is less than about …

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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 May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 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.
FiledMarch 30, 1989
GrantedMay 18, 1993
Term endedMay 18, 2010
Patent numberCA 1317701 C
Classification (IPC)A61F13/15 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 30, 1989Patent grantedMay 18, 1993Term endedMay 18, 2010

Sources & verification

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