An improved absorbent element and an absorbent article including the element
CA 2012316 C · Owner: Palumbo, Gianfranco · Inventors: Palumbo, Gianfranco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent element (7) for disposable absorbent articles composed of hydrophilic fibres and a discontinuous layer of particles of a hydrogelling absorbent material (19) disposed on the upper surface of the element includes two ride regions (14) located at least in correspondence with the central part (4) of the element, in which the hydrogelling absorbent material (19) is distributed at a greater concentration on the surface or within the element. When the absorbent element (7) is used as an absorbent pad for disposable diapers, the two side regions (14) are situated at least in the crutch region of the diaper so as to ensure more effective lateral leak-proofing.
Read the whole patent
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 15, 1990 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2012.
- 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.