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Expired Canadian patentCanada

Sanitary napkin with expandable flaps

CA 1324237 F · Owner: Mcneil-Ppc, Inc. · Inventors: Salerno, Catherine E.

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

Sanitary napkins are disclosed which include at least one flap having a portion that may be expanded longitudinally for permitting the flap to expand when folded over a side of an undergarment. This enables the flap to fold outwardly to the back of the undergarment and conform to the contour along the curved line of the crotch. Thus, an improved sanitary product is provided that provides side-protection along the entire longitudinal edges of the napkin.

Read the whole patent

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 November 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 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.
FiledFebruary 24, 1989
GrantedNovember 16, 1993
Term endedNovember 16, 2010
Patent numberCA 1324237 F
Classification (IPC)A61F13/15 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedFeb 24, 1989Patent grantedNov 16, 1993Term endedNov 16, 2010

Sources & verification

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