Patent Yard Sign in
Expired Canadian patentCanada

Disposable diaper having improved tab fastener means

CA 1204554 A · Owner: Uni-Charm Corporation · Inventors: Ochi, Mitsuzo; Suzuki, Migaku; Igaue, Takamitsu

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

The invention is concerned with a disposable diaper having a moisture pervious topsheet adapted to contact the body of an infant, a moisture impervious backsheet substantially coextensive with the topsheet an absorbent core interposed between the topsheet and the backsheet, and adhesive tab fastener means for releasably fastening together opposed portions of the diaper. The tab fastener means comprise a fastening tape and a reinforcing tape each having an adhesive surface and a non-adhesive surface, the adhesive surface of the fastening tape having one end adhered to the backsheet of one of the opposed portions of the diaper and a portion adhered to the non-adhesive surface of the …

Read the whole patent

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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 1982
GrantedMay 20, 1986
Term endedMay 20, 2003
Patent numberCA 1204554 A
Classification (IPC)A61F13/58

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedJan 25, 1982Patent grantedMay 20, 1986Term endedMay 20, 2003

Sources & verification

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