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Expired Canadian patentCanada

Inking device for a rotary printing machine

CA 2235172 C · Owner: Dilling, Peer · Inventors: Dilling, Peer; Schonberger, Wolfgang

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

An inking device for inking a screen roller of a printing machine includes an ink supply device with an ink reservoir that are removable as one unit from the printing machine easily and without tools. The ink reservoir is separable from the ink supply device. The ink reservoir is filled using an ink cartridge. The printing ink is conveyed under pressure from the ink reservoir to the ink supply device in a supply line. The ink is pressed into the cups or hatchings of the inking device roller via the supply line by using a pump or a conveying roller.

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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 April 17, 1998 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 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.
FiledApril 17, 1998
GrantedJanuary 29, 2002
Term endedApril 17, 2018
Patent numberCA 2235172 C
Classification (IPC)B41F31/20 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedApril 17, 1998Patent grantedJan 29, 2002Term endedApril 17, 2018

Sources & verification

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