Method for targeted application of performance enhancing materials to a creping cylinder
CA 2715879 C · Owner: Nalco Company · Inventors: Archer, Sammy L.; Furman, Gary S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for target application of a Performance Enhancing Material (77,78,79) to a creping cylinder (30) in order to improve a tissue making operation is described and claimed. The method involves dividing the creping cylinder (30) into Zones (15 17, 18, 19, 28, 38) and then applying the desired Performance Enhancing Material (77,78,79) on a Zone by Zone basis such that each Zone has the optimal Performance Enhancing Material (77,78,79) present. Furthermore a method to ascertain the amount and pattern of application of the Performance Enhancing Material (77,78,79) used on the creping cylinder (30) is described and claimed. This method involves adding an inert fluorescent tracer to said …
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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 September 24, 2003 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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
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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.