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Expired Canadian patentCanada

Apparatus and method reading data from a solid state x-ray detector

CA 2034471 C · Owner: Mcdaniel, David Leo · Inventors: Petrick, Scott William; Mcdaniel, David Leo

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

A image detector includes an array of photodetectors arranged in n rows and m columns with at least a portion of the photodetectors in each column being selectively connected to a common column output signal line by a selector means. The image information is read out of the photodetectors by sequentially selecting groups of rows starting with a row near the middle of the array and then sequentially selecting other groups of rows on alternate sides of the array middle. As image data is read out of the photodetectors in the selected row group groups of, column output lines are coupled together to provide a combined output signal. This readout technique provides a reduction in the image data …

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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 January 17, 1991 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 17, 1991
GrantedApril 25, 2000
Term endedJanuary 17, 2011
Patent numberCA 2034471 C
Classification (IPC)A61B6/00 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedJan 17, 1991Patent grantedApril 25, 2000Term endedJan 17, 2011

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