An improved absorbent element incorporating a hydrogelling absorbent material and an absorbent article including the element
CA 2041119 C · Owner: Faricerca S.P.A. · 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 for disposable absorbent articles is made of hydrophilic fibres and includes two regions at its two longitudinal ends, in which a hydrogelling absorbent material is distributed in a mixture with the hydrophilic fibres. When the absorbent element is used as an absorbent pad for disposable diapers, the end regions are placed around the user's waist.
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 April 24, 1991 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2013.
- 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.