Improved resilient, three dimensional polymeric film with slanted capillary apertures, and absorbent article with backsheet comprising the film
CA 2368683 A1 · Owner: Carlucci, Giovanni · Inventors: Cimini, Carmine; Marinelli, Luigi; D'Incecco, Amedeo Franco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to resilient three dimensional, perforated , plastic webs which allow passage of water vapour and preferably of air, and , are resistant to the transmission of aqueous fluids at least in one direction. According to the present invention the perforated plastic webs consist of a liquid impervious polymeric film having apertures. Theses apertures form capillaries which are not perpendicular to the plane of the film but are disposed at an angle of less than 90~ relative to the plane of the film. The capillaries also have a length L which has a preferred value as compared to the distance that separates a capillary from adjacent ones. The present invention …
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 March 31, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2022.
- 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.