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Expired Canadian patentCanada

Process for correcting geometric errors in the transfer of information to a printing stock

CA 2239701 C · Owner: Man Roland Druckmaschinen Ag · Inventors: Enke, Gregor; Weichmann, Armin

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A process corrects geometric errors in the transfer of information without mechanical intervention on the printing form to compensate for the errors that occur and thus attain optimized print quality prior to imaging. The corrections are visually indiscernible, so that the artifacts created in the printed result by the corrections do not stand out in the image. A device-independent description of the page information to be printed is converted by a Raster Imaging Process into at least one device-dependent digital matrix. Each matrix with m rows and n columns contains the information for a certain color to be printed. After the individual matrices are produced they are supplied to a matrix, …

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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 June 5, 1998 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 5, 1998
GrantedMarch 5, 2002
Term endedJune 5, 2018
Patent numberCA 2239701 C
Classification (IPC)B41F33/16 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJune 5, 1998Patent grantedMarch 5, 2002Term endedJune 5, 2018

Sources & verification

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