Method for making fluid distribution materials
CA 2256474 A1 · Owner: Procter & Gamble Gmbh · Inventors: Schmidt, Mattias; D'Acchioli, Vincenzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fluid distribution materials are particularly useful in absorbent core structures used in disposable absorbent articles such as baby diapers incontinence products, and catamenial products. Wicking properties in a preferential fluid distribution direction of a fluid distribution material are improved by a mechanical post formation treatment. Essentially the post , formation treatment consists of feeding a web (1) of the fluid distribution material between two corrugated rolls (21 25). Each corrugated roll (21, 25) , has intermeshing circumferential ridges (35) and grooves (31). The widths of the ridges (35) and grooves (31) are related to the caliper of the web (1) and the degree of …
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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 May 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 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.