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Expired Canadian patentCanada

High resolution pulse echo ultrasonic imaging display system

CA 1074901 A · Owner: Rca Corporation · Inventors: Koenig, Edwin T.; Mezrich, Reuben S.

CIPO record

Overview

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

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Abstract From the Canadian patent

Abstract of the Disclosure An acoustic focusing device occupying a fixed aperture is used to both illuminate internal structure of a visually opaque object with a scanning focused beam of ultrasonic energy and for returning a reflected signal portion of the scanning focused beam passed therethrough for detection. The use of such a fixed-aperture focusing device permits deep soft tissue of a living human being to be displayed with high resolution for medical diagnostic purposes in a manner compatible with a real time frame rate.

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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

  • Granted April 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 1, 1980
Term endedApril 1, 1997
Patent numberCA 1074901 A
Classification (IPC)G01S15/89 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedApril 1, 1980Term endedApril 1, 1997

Sources & verification

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