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Expired Canadian patentCanada

Material blending system

CA 1214456 A · Owner: Technovators, Inc. · Inventors: Fisher, Glen W.

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

A blending bin for particulate having a plurality of vertically extending passageways is provided. Each passageway incudes multiple vertically spaced ports. Blending vanes are provided within each passageway to control the proportion of material withdrawn from the bin through the ports. The streams of material are in turn proportionally combined into a single outlet stream. The ports are spaced such that lots of material loaded into the bin will be blended together in the outlet stream and such that thin layers of off-grade or non-uniform material will not reach disproportionate levels in the outlet stream.

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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 November 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
  • 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 10, 1983
GrantedNovember 25, 1986
Term endedNovember 25, 2003
Patent numberCA 1214456 A
Classification (IPC)B01F5/24 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 10, 1983Patent grantedNov 25, 1986Term endedNov 25, 2003

Sources & verification

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