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Expired Canadian patentCanada

Disposable diaper with intersecting stressed crotch and waist seals

CA 1287700 C · Owner: Karami, Hamzeh · 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 having elasticized crotch seals and an elasticized waist seal formed from elastic members secured to the backing sheet. The elastic members physically intersect each other and are under such tension so as to provide an initial stretching of the elastic members extending substantially at right angles to each other thereby maximizing the comfort of an infant wearing the disposable diaper while maintaining a boatlike shape before application on an infant with the ears in a raised position. The elastic members may be spaced from the edge of the pad or may overlie the front or back surface of the pad to minimize 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 August 20, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 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.
FiledApril 14, 1986
GrantedAugust 20, 1991
Term endedAugust 20, 2008
Patent numberCA 1287700 C
Classification (IPC)A61F13/15

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedApril 14, 1986Patent grantedAug 20, 1991Term endedAug 20, 2008

Sources & verification

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