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Expired Canadian patentCanada

Device for separating fine particles of solid matter from waste fluid

CA 1298821 C · Owner: Bollmann, Andreas · Inventors: Bollmann, Andreas; Durr, Walter; Hofmann, Hans-Joachim

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

Device for Separating Fine Particles of Solid Matter from Waste Fluid, A b s t r a c t :, A device for separating fine particles of solid matter from waste fluid has a water ring pump (16, 44) an air separator, (18, 60) and a solid bowl centrifuge (24 30) which are, arranged axially one behind the other in the aforementioned sequence and are driven by the motor shaft (28) of a common drive motor (12). (Figure 1)

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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 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 27, 1986
GrantedApril 14, 1992
Term endedApril 14, 2009
Patent numberCA 1298821 C
Classification (IPC)B04B5/10 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 27, 1986Patent grantedApril 14, 1992Term endedApril 14, 2009

Sources & verification

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