Zero scrap absorbent core formation process and products derived from web-based absorbent materials
CA 2207259 C · Owner: Lange, Stephen Joseph · Inventors: Hackett, John Walter; Seitz, Bret Darren; Benson, Douglas Herrin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described herein is a multiple layer absorbent core having a front ear section, a crotch section and a back ear section wherein the machine , direction length of the crotch section equals the combined machine direction length of the front ear section and the back ear section the angle and radii , forming the transition from the crotch width to the ear width being equal the , core being suitable for use in an absorbent article and a method for , manufacturing such multiple layer absorbent core. The method comprises providing a single web (10) of absorbent core material from a roll in which , the web having parallel straight longitudinal side edges; continuously transporting the web of …
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 January 5, 1996 and granted December 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2018.
- 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.