System and method for cellular specimen grading
CA 2285331 A1 · Owner: Decker, William J. · Inventors: Decker, William J.; Douglass, James; Riding, Thomas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The system and method for evaluating the amount of marker identifying precipitate in a cellular specimen on a microscope slide is disclosed. The automated microscope system performs a low magnification and high magnification scan of a cellular specimen to identify and confirm candidate objects of interest which correspond to cells containing a marker identifying precipitate. A regularly shaped area centered about a centroid computed for a candidate object of interest is used to define the pixels to be processed. A color ratio is computed for each pixel (204) and those color ratios indicative of being dominated by the color corresponding to the marker identified precipitate are …
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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 March 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 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.
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.