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Expired Canadian patentCanada

Ultrasonic tissue imaging method and apparatus with doppler velocity and acceleration processing

CA 2108098 C · Owner: Weinshenker, Marc D. · Inventors: Weinshenker, Marc D.; Guracar, Ismayil M.; Clark, Janna G.

CIPO record

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Abstract From the Canadian patent

An ultrasound tissue imaging system having an acoustic transducer, B-mode imaging means to produce with said transducer an electronically scanned B-mode image of tissue under examination, Doppler imaging means that accepts and processes large amplitude, low frequency signals to produce with said transducer an electronically scanned acoustic image of moving tissue, and color display means for displaying the B-mode image as a two-dimensional image with echo intensities encoded using a first mapping function and for simultaneously displaying Doppler information from moving tissue as a twodimensional image using a second and distinct mapping function that is spatially coordinated with and …

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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 October 8, 1993 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 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.
FiledOctober 8, 1993
GrantedJune 5, 2001
Term endedOctober 8, 2013
Patent numberCA 2108098 C
Classification (IPC)A61B8/13 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedOct 8, 1993Patent grantedJune 5, 2001Term endedOct 8, 2013

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