Altering the surfaces of functional absorbent materials for use in absorbent articles
CA 2275286 C · Owner: Congleton, Stephen Douglas · Inventors: Aouad, Yousef Georges; Walsh, Bradley Edward; Dragoo, Jerry Layne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The enclosed invention relates to functional absorbent materials (20) that are profiled through cutting and heating to form flow channels (40) and in one , embodiment to form bellows (45) which rise above the flow channels (40). Additionally, the flow channels (40) which are partially cut into an absorbent material (20) may also function as hinge means for that material as regards bending and conformity of fit. In one embodiment functional absorbent , material (20) is provided with discrete heating and cutting (30) e.g. by a , laser, by which channels (40) and bellows (45) are simultaneously formed. In another embodiment using a discrete heating and cutting means (30) e.g. a , laser, …
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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 9, 1997 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.