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Expired Canadian patentCanada

Disposable diaper with retaining and securing fastener

CA 1057461 A · Owner: Colgate-Palmolive Company · Inventors: Karami, Hamzeh

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 disposable diaper comprising an absorbent pad assembly, having a pair of side edges a pair of end edges connecting the, side edges a front surface, a backing sheet of fluid impervious material defining a back surface of the pad assembly an absorbent, pad, and a laterally extending end section adjacent one end edge of the pad assembly. The diaper has a tape fastener comprising a release sheet having a release back surface and being attached to the back surface of the end section adjacent the side edge of the pad assembly. The fastener has a securement section having adhesive on a front surface releasably attached to the back surface of the release sheet and having a release back surface. …

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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 1057461 A
Classification (IPC)A61F13/58

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.