Absorbent structure having improved fluid surge management and product incorporating same
CA 2014203 C · Owner: Shershin, Ann Marie · Inventors: Matthews, Billie Jean; Latimer, Margaret Gwyn; Shershin, Ann Marie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent article includes a retention portion for storing absorbed liquids, and a distinctive surge management portion. The surge management portion, which has a selected basis weight is, constructed to rapidly uptake and temporarily hold at least three (3) successive surges of liquid directed into the target zone of the article and then release each of the surges to the retention portion. The retention portion desorbs each input of liquid from the surge management portion and stores the liquid. Particular functional and structural parameters can further characterize the surge management portion of the absorbent article.
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 9, 1990 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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.