Absorbent structure having improved absorption properties
CA 2330008 A1 · Owner: Strandqvist, Kersti · Inventors: Strandqvist, Kersti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent structure in an absorbent article such as a diaper a pant , diaper, an incontinence guard a sanitary napkin or the like, said structure comprising a combination of a porous material such as fibers and/or foam and , at least 50 % by weight of a superabsorbent material in at least one area thereof in which the superabsorbent material is distributed. Said superabsorbent material is cross-linked by means of ionic bonds preferably a , polyvalent metal ion. The superabsorbent may further be covalently crosslinked.
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 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2021.
- 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.