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Expired Canadian patentCanada

Disposable diaper featuring crotch tensioning means for improved leakage resistance and fit

CA 1282203 C · Owner: The Procter & Gamble Company · Inventors: Shikata, Hiroaki; Burnett, Susan Elizabeth; Turner, Jerry

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 having front and rear waist portions and comprising a liquid permeable topsheet; a liquid impermeable backsheet affixed to the topsheet an absorbent core interposed between the topsheet and the backsheet; a crotch portion located intermediate the front and rear waist portions: a pair of side flaps; and crotch tensioning means associated with each of the side flaps. The absorbent core has oppositely disposed end portions and a pair of longitudinally disposed side edges therebetween. The crotch tensioning means further comprises one or more elasticized members extending from an attachment area in the crotch portion of the diaper, across the respective side flap to a …

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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 April 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 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.
FiledDecember 1, 1986
GrantedApril 2, 1991
Term endedApril 2, 2008
Patent numberCA 1282203 C
Classification (IPC)A61F13/15

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 1, 1986Patent grantedApril 2, 1991Term endedApril 2, 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.