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Expired Canadian patentCanada

Method and apparatus for measuring parameters of solid phase of slurries

CA 1284530 C · Owner: Vsesojuzny Nauchno-Issledovatelsky I Proektny Institut Mekhanicheskoi Obrabotkipoleznykh Iskopaemykh · Inventors: Khorolsky, Valentin P.; Protsuto, Vladimir S.; Morkun, Vladimir S.

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Abstract From the Canadian patent

A method for measuring parameters of solid phase of slurries, having the following steps: forming ultrasonic oscillations and emitting them into a fluid under study, forming Lamb waves and directing them into the wall of a vessel containing the fluid under study, forming acoustic currents and radiation pressure of a sonic radiation in the fluid under study and, measuring amplitude and length of pulses of the ultrasonic oscillations that passed through the fluid under study and of the Lamb waves that passed through a predetermined distance along the wall of the vessel containing the fluid under study with and without the action of acoustic currents and radiation pressure the, values of 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

  • Granted May 28, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 8, 1986
GrantedMay 28, 1991
Term endedMay 28, 2008
Patent numberCA 1284530 C
Classification (IPC)G01N29/02

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMay 8, 1986Patent grantedMay 28, 1991Term endedMay 28, 2008

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