A unit and a method for forming absorbent pads used in nappies/diapers
CA 2620625 C · Owner: Piantoni, Matteo · Inventors: Piantoni, Matteo; Perego, Alberto; Aiolfi, Luca
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Multilayer absorbent pads for nappy/diaper pants are manufactured on a unit (1) comprising a first device (3a) and a second device (3b) by which respective first and second layers (4a 4b) of absorbent material (5) are , taken up from two infeed stations shaped, and transferred to two release stations. The devices (3a, 3b) are synchronized in operation and associated , by way of a transfer station (8) at which the first layer (4a) of absorbent material is joined directly to the second layer (4b) positioned selectively , and with the second layer still retained by suction on the second device (3b) ; the two layers are thereupon compressed simultaneously to form an absorbent pad (2) …
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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 August 31, 2006 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.