Method and apparatus for texturing a metal sheet or strip
CA 2439696 C · Owner: Novelis, Inc. · Inventors: Davenport, Christopher John; Miller, Daniel Baruch; Hunter, John Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a method of texturing a metal sheet or strip (8) which , method comprises a plurality oF sequential texturing passes each of which is performed by passing the sheet or strip (8) between at least one pair of rollers (7), wherein at least one of each pair of rollers (7) has a textured pattern on the surface thereof and the textured patterns is transferred to the sheet or strip (8) during each texturing pass and wherein the textured , surface on the sheet or strip (8) resulting from each pass overlaps with that from the one or more other passes to form a final textured pattern. There is also provided an apparatus for texturing a metal sheet or strip (8).
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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 March 12, 2002 and granted July 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2024.
- 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.