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Expired Canadian patentCanada

Diaper

CA 1303796 C · Owner: Lannigan, Evelyn · Inventors: Lannigan, Evelyn

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

Evelyn Lannigan INVENTOR, Evelyn LANNIGAN, ABSTRACT, The re-usable diaper consists of a pair of identically sized panels in the modified form of the letter "T" with opposite wings or tips that are integral and transverse to a longitudinal crotch portion terminating at a distal end. The wings are provided with a pair of loop and hook fasteners on one panel, and the other panel carries a longitudinal fastener on one of the wings as well as at least one longitudinal fasteners oriented laterally to the longitudinal axis but near the distal end of the diaper. Preferably the central crotchregion is a multi-ply material stitched between the two panels and central yet marginal elastic margins …

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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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1989
GrantedJune 23, 1992
Term endedJune 23, 2009
Patent numberCA 1303796 C
Classification (IPC)A61F13/15 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedFeb 24, 1989Patent grantedJune 23, 1992Term endedJune 23, 2009

Sources & verification

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