Fabric crepe process for making absorbent sheet
CA 2724121 C · Owner: Gpcp Ip Holdings Llc · Inventors: Duggan, David P.; Jones, Colin A.; Edwards, Steven L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making a belt-creped absorbent to form a web having a plurality of interconnected regions of different fiber orientations is described. The method comprises , compactively dewatering a papermaking furnish to form a nascent web having a generally , random distribution of papermaking fiber. The dewatered web having a generally random , fiber distribution is applied to a translating transfer surface moving at a first speed. The web is , belt-creped from the transfer surface at a consistency of from about 30 to about 60 percent , utilizing a patterned creping belt. The creping step occurs under pressure in a belt creping nip , defined between the transfer surface and the …
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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 October 6, 2003 and granted December 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2025.
- 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.