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Expired Canadian patentCanada

Biological analysis system self-calibration apparatus

CA 2200457 C · Owner: Oh, Seho · Inventors: Kuan, Chih-Chau L.; Bannister, Wendy R.; Lee, Shih-Jong J.

CIPO record

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

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Abstract From the Canadian patent

Reference information (15) for a biological slide (11) is obtained. The reference information (15) normalizes the measured object features (19). Calibrated feature measurement (21), not based on absolute measurements self-, adjusts to match the situation of each slide (11) where each slide (11) is , characterized by the reference information (15). The reference may be different from slide to slide because of the preparation variations. The calibrated features (21) will not carry the interslide variations. In addition, the reference information (15) provides a good indication of the slide condition such as dark stained, air dried etc. which can be used as , slide features (21) for the …

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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 September 8, 1995 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2017.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 8, 1995
GrantedAugust 14, 2001
Term endedSeptember 8, 2015
Patent numberCA 2200457 C
Classification (IPC)G06K9/00 +1 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedSep 8, 1995Patent grantedAug 14, 2001Term endedSep 8, 2015

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