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Expired Canadian patentCanada

Disposable diaper

CA 1057453 A · Owner: Colgate-Palmolive Company · Inventors: Taylor, Glenn N.

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

A diaper is provided in which with respect to a fold line, extending from a front waistline portion to a back waistline portion equidistant from the diaper lateral margins a first portion of the surface for, contact with the diaper wearer on one side of the fold line is secured to a second portion of that surface on the other side of the fold line those, first and second portions being symmetrically located with respect to the fold line. The diaper provided is thus capable of accepting a surge of liquid without leakage.

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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 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 3, 1979
Term endedJuly 3, 1996
Patent numberCA 1057453 A
Classification (IPC)A61F13/15

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 3, 1979Term endedJuly 3, 1996

Sources & verification

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