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Expired Canadian patentCanada

Bubble separating apparatus

CA 2128968 C · Owner: Yabumoto, Junsuke · Inventors: Yabumoto, Junsuke; Hirose, Masanori

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A vortical flow type bubble separating apparatus comprises a container defining a substantially cone-shaped vortical flow chamber having a lower larger diameter end with a plurality of holes an outer casing, for receiving a liquid discharged from the vortical flow chamber through the holes, a center conduit pipe with a plurality of orifices for removing bubble containing fraction from the vortical flow chamber for discharging an annular preliminary vortical flow passage extending at least approximately entire circumference of the larger diameter end portion of the container, a single opening defined through the peripheral wall of the vortical flow chamber and communicating the vortical flow …

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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 July 27, 1994 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 27, 1994
GrantedMay 2, 2000
Term endedJuly 27, 2014
Patent numberCA 2128968 C
Classification (IPC)B01D19/00 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJuly 27, 1994Patent grantedMay 2, 2000Term endedJuly 27, 2014

Sources & verification

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