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Expired Canadian patentCanada

Disposable diaper having an improved fastening device

CA 1286852 C · Owner: The Procter & Gamble Company · Inventors: Scripps, Charles Locke

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 disposable diaper comprising an absorbent core that is encased between a liquid pervious topsheet and a liquid impervious backsheet, elasticized leg openings and a fastening, device for securing the diaper on a wearer. The fastening device comprises a first member having a plurality of fiber elements and a second member having a plurality of engaging elements that are mechanically engageable with the fiber elements of the first member. The engaging elements are disposed and manufactured so as to provide a fastening device that is capable of resisting the peel forces and shear stress that are encountered during use and that is comfortable and skin friendly for the wearer. Each of the …

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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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 1988
GrantedJuly 30, 1991
Term endedJuly 30, 2008
Patent numberCA 1286852 C
Classification (IPC)A61F13/82 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedJan 25, 1988Patent grantedJuly 30, 1991Term endedJuly 30, 2008

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