Image processing apparatus
CA 2090449 C · Owner: Canon Kabushiki Kaisha · Inventors: Ohta, Eiji; Takaragi, Yoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus judging by the judging function indicating the degree of similarity of RGB signals inputted by reading an original and information of specific originals prepared beforehand processing the, inputted RGB signals in accordance with the result of judgment, obtaining the RGB signals by reading a test original in which the colors are similar to those of specific original, executing the above judging function by using the RGB signals, and where the test of the judging function has properly ended, displaying of this while where the test of the judging function has improperly ended, displaying of this.
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 February 26, 1993 and granted April 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.