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Expired Canadian patentCanada

Absorbent article having flaps with a deformed hinge and zones of extensibility

CA 2233944 C · Owner: Terada, Nami · Inventors: Bamber, Jeffrey Vincent; Olsen, Robb Eric; Terada, Nami

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

Absorbent articles such as sanitary, napkins panty liners, adult incontinence, devices and the like, which have flaps, are disclosed. The absorbent articles have a deformed hinge that is located, between at least a portion of the main body portion of the absorbent article and the flaps, and zones of extensibility for relieving the stresses that develop in the flaps when the flaps are folded down and under a wearer's undergarment.

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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

  • Filed October 1, 1996 and granted February 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 1, 1996
GrantedFebruary 11, 2003
Term endedOctober 1, 2016
Patent numberCA 2233944 C
Classification (IPC)A61F13/56 +1 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedOct 1, 1996Patent grantedFeb 11, 2003Term endedOct 1, 2016

Sources & verification

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