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Expired Canadian patentCanada

Process and apparatus for contacting gas, liquid and solid particles

CA 1280271 C · Owner: Bukkems, Franciscus Henricus Jozephus · Inventors: Bukkems, Franciscus Henricus Jozephus; Blauwhoff, Petrus Matthias Marie; Van 'T Hoog, Arie Cornelis

CIPO record

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Abstract From the Canadian patent

Process for contacting gas liquid and solid particles in a, reactor 1 comprising a) introducing gas through inlet 2 and liquid through inlet 3 into the lower part of the reactor 1 and introducing solid particles into the upper part of the reactor 1 through inlet 7; b) passing gas and liquid upwardly through a number of contact zones 10 arranged one above the other and having a thickness of between 0.5 cm and 20 cm and separated from each other by screens 11 provided with a large number of apertures with an area per aperture of between 0.05 cm2 and 5 cm2 the ratio between the sum, of the areas of the apertures and the total area of a screen 11 lying between 0.4 and 0.8, and allowing solid …

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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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
FiledFebruary 3, 1987
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280271 C
Classification (IPC)B01J8/12 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 3, 1987Patent grantedFeb 19, 1991Term endedFeb 19, 2008

Sources & verification

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