Expired Canadian patentCanada
Methods for measurement and control of ink concentration and film thickness
CA 2605445 C · Owner: Sun Chemical Corporation · Inventors: Rich, Danny
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed to measure or monitor ink concentration or ink thickness of an ink film as printed on a printing press which consists of , measuring light reflected from the ink film and the ink substrate.
Read the whole patent
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 18, 2006 and granted October 1, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2026.
- 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.
FiledApril 18, 2006
GrantedOctober 1, 2013
Term endedApril 18, 2026
Patent numberCA 2605445 C
Classification (IPC)B41F1/54 +2 more
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.