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Expired Canadian patentCanada

Non-woven through air dryer and transfer fabrics for tissue making

CA 2730857 C · Owner: Kimberly-Clark Worldwide, Inc. · Inventors: Bakken, Andrew Peter; Lindsay, Jeffrey Dean; Burazin, Mark Alan

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

The present invention is an endless non-woven tissue making fabric having a three-dimensional texture suitable for use as a fabric for producing three-dimensional fibrous webs. The endless non-woven tissue making fabric comprises a plurality of substantially parallel adjoining sections of non-woven material. Each section of non-woven material has a width substantially less than the width of the non-woven tissue making fabric. Each section of non-woven material may be joined to at least one other adjoining section of non-woven material. The non- woven tissue making fabric has a machine direction a cross-machine direction, a tissue contacting surface and a tissue machine contacting surface. …

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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 April 30, 2003 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2025.
  • 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 30, 2003
GrantedNovember 12, 2013
Term endedApril 30, 2023
Patent numberCA 2730857 C
Classification (IPC)D06C23/04 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 30, 2003Patent grantedNov 12, 2013Term endedApril 30, 2023

Sources & verification

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