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Expired Canadian patentCanada

Rolling mill for rolling metal strip

CA 2548796 C · Owner: Sms Siemag Aktiengesellschaft · Inventors: Richter, Hans-Peter; Jepsen, Olaf Norman; Zielenbach, Michael

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In a rolling mill for rolling metal strip (1) especially, steel strip, which has at least one rolling stand (2) an, upstream coiler (3), and a downstream coiler (4) wherein an "S", roil unit (5, 6), which has two rolls (7 8; 9, 10) that guide, the strip (1) in the form of an "S" is arranged between the, upstream coiler (3) and the rolling stand (2) and/or between the rolling stand (2) and the downstream coiler (4) the invention, provides that a first roll (7 9) of the "S" roll unit (5, 6) is, arranged in a fixed manner and a second roll (8, 10) of the "S", roll unit (5 6) is arranged in such a way that it can move relative to the first roll (7, 9).

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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 August 10, 2005 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 2005
GrantedMarch 20, 2012
Term endedAugust 10, 2025
Patent numberCA 2548796 C
Classification (IPC)B21B39/08

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedAug 10, 2005Patent grantedMarch 20, 2012Term endedAug 10, 2025

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.