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Expired Canadian patentCanada

Disposable diaper

CA 1135902 A · Owner: Molnlycke Ab · Inventors: Ternstrom, Ingela M.; Boman, Lars E.

CIPO record

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

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Abstract From the Canadian patent

APPLICANT: M?LNLYCKE AB, TITLE: DISPOSABLE DIAPER ABSTRACT OF THE DISCLOSURE, A disposable diaper including a first outer layer of a liquid-permeable material intended to abut the body of the user, a second outer layer of a liquid-impermeable material and an intermediate layer of absorbent material arranged between said two outer layers. At least that portion of the diaper, which is situated in the user's crotch, is provided with elastic bands or threads extending between the two side edges of the diaper said bands or, threads being at least partially connected with pretension to the liquid-permeable outer layer.

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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 November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
  • 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 31, 1980
GrantedNovember 23, 1982
Term endedNovember 23, 1999
Patent numberCA 1135902 A
Classification (IPC)A61F13/15

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedJan 31, 1980Patent grantedNov 23, 1982Term endedNov 23, 1999

Sources & verification

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