Papermaking roll cover and method for its production
CA 2509195 C · Owner: Albany International Corp. · Inventors: Paquin, Maurice; Davenport, Francis L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll cover for use on a roll used in the production of paper products and the method of making , same are disclosed. The present invention eliminates or significantly reduces post processing , steps that occur after the material has been applied and/or creates discrete regions for localizing , desired functional attributes on the roll. In a first embodiment a uniform , coating of a single , material is applied to the roll as a flowable phase and upon setting of the , material, a roll cover is formed upon the roll's surface. In another embodiment at least two materials , are applied in flowable phases to the roll's surface. The first material is a sacrificial removable material, …
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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 November 13, 2003 and granted March 10, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 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.