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Expired Canadian patentCanada

Densifying of a bulk particulate material

CA 2523429 C · Owner: Energy And Densification Systems (Proprietary) Limited · Inventors: Russel-Smith, Kevan Vaughan

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

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Abstract From the Canadian patent

A method of densifying a bulk particulate material includes at least partially confining the bulk particulate material and mechanically agitating the , confined bulk particulate material with at least two elongate rotatable members (14), (15) of which at least one is submerged in the confined bulk particulate material. The rotatable members each have an axis of rotation and include a plurality of axially spaced agitating formations (40) which project outwardly away from their axes of rotation. The rotatable members are transversely spaced.

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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 April 23, 2004 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 23, 2004
GrantedJune 26, 2012
Term endedApril 23, 2024
Patent numberCA 2523429 C
Classification (IPC)B01J2/10

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedApril 23, 2004Patent grantedJune 26, 2012Term endedApril 23, 2024

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