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Expired Canadian patentCanada

Patterned fibrous structures

CA 2581609 C · Owner: De La Rosa, Luis Bernardo · Inventors: Dolan, Jennifer Hope; Knobloch, Thorsten; Weaver, Gregg Thomas

CIPO record

Overview

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

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Abstract From the Canadian patent

Patterned fibrous structures, more particularly to fibrous structures that comprise a pattern that conveys to a user a characteristic of the fibrous structure and/or single- or multi-ply sanitary tissue product comprising such a patterned fibrous structure and methods for making same are provided.

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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

  • Filed March 23, 2005 and granted July 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 23, 2005
GrantedJuly 16, 2013
Term endedMarch 23, 2025
Patent numberCA 2581609 C
Classification (IPC)D21H27/02 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 23, 2005Patent grantedJuly 16, 2013Term endedMarch 23, 2025

Sources & verification

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