Absorbent article having two coapertured layers and a method of making the article
CA 2104281 C · Owner: Kimberly-Clark Worldwide, Inc. · Inventors: Gilman, Thomas Harry; Mitchler, Patricia Ann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent article having two coapertured layers and a method of making the absorbent article are disclosed. The absorbent article includes first and second layers formed from nonwoven materials. The first layer has an open pore structure and has an average fiber denier greater than about 2.5. The second layer has a finer pore structure than the first layer. The first layer overlays the second layer and both layers have a plurality of coaxially aligned apertures formed completely therethrough. The apertures allow body fluid especially viscous fluid like menses, which is deposited on the first layer to rapidly pass down through both layers.
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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 August 17, 1993 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2015.
- 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.