Method for producing an aluminium strip for lithographic printing plates
CA 2395166 A1 · Owner: Hollrigl, Gunther · Inventors: Hollrigl, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for producing a strip consisting of aluminium, or an aluminium alloy for lithographic printing plates that have been electrolytically roughened. According to said method the metal is , continuously cast to a maximum thickness (da) of 4.5 mm the cast strip is , rolled, without an additional application of heat to an intermediate , thickness (dz) amounting to 30 to 80 % of the total reduction in thickness (da - de), the strip which has been rolled to the intermediate thickness (dz) is annealed at a temperature ranging between 250 and 320~ C in such a way that a , recovery condition with greater stability is achieved without recrystallisation, and once …
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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 December 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2022.
- 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.