Absorbent structure having decoupled topsheet
CA 2275289 C · Owner: Mcfall, Ronald Ray · Inventors: Alvis, Cynthia Lee; Ahr, Nicholas Albert; Bien, Denise Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Absorbent structures comprising a topsheet a backsheet with an absorbent core , between the topsheet and the backsheet are described. The absorbent structures further comprise a support strip that provides a contractive force that causes at least a portion of the support strip and at least a portion of the topsheet to become decoupled from the absorbent core. Alternative embodiments of the absorbent structure include laterally extending flaps and an abbreviated undergarment.
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 December 5, 1997 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2019.
- 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.