Fluid distribution materials with improved wicking properties
CA 2256677 C · Owner: Procter & Gamble Gmbh · Inventors: Schmidt, Mattias; D'Acchioli, Vincenzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the selection of materials which are particularly useful as fluid distribution material for being used in disposable absorbent articles by being characterised in that they have a wicking time of less than 120 seconds and a cumulative flux of more than 0.075 grams/cm2/ second for said preferential fluid distribution direction at 12.4 cm height, when applying the Vertical Wicking Test. A further useful selection criterion for such materials is a non-isotropic fluid distribution behaviour expressed in that the wicking time in the preferential distribution direction is less than 80 % of the wicking time of perpendicular direction at 8.3 cm height, when …
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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 May 28, 1997 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.