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Expired Canadian patentCanada

Convex roll used for influencing the profile and flatness of a milled strip

CA 2568829 C · Owner: Bode, Thorsten · Inventors: Kloeckner, Juergen; Weingarten. Ludwig; Bode, Thorsten

CIPO record

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Abstract From the Canadian patent

The invention relates to a Sexto-type roll stand with x3 grinding in which a , large difference in diameter between the intermediate rolls (20 21) causes , increased wear and rough surfaces on the support rolls (31 31) during , operation, the damage pattern on the support rolls (30 31) corresponding to , the shape of the CVC grinding following an extended operating time. In Quartotype roll stands, the grinding amplitude is initially also significantly greater than is required for rolled programs thus resulting in the , unfavorable wear pattern as well on the support rolls. The aim of the invention is to minimize said flaws. Said aim is achieved by the fact that the surface length (L) of …

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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 9, 2005 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 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.
FiledSeptember 9, 2005
GrantedMarch 27, 2012
Term endedSeptember 9, 2025
Patent numberCA 2568829 C
Classification (IPC)B21B13/14

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedSep 9, 2005Patent grantedMarch 27, 2012Term endedSep 9, 2025

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