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Expired Canadian patentCanada

Vertical grain milling machine

CA 2174190 C · Owner: Satake, Satoru · Inventors: Hironaka, Kazuo; Satake, Satoru

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

In an abrasive type vertical grain milling machine, there are mounted, on a main shaft extending generally vertically and disposed rotatably in an upright bran-removing cylinder, a screw roll for feeding grain a, plurality of abrasive milling rolls disposed below the screw roll in spaced relation to each other along the main shaft for abrading the grain, and a rotary roll disposed below the plurality of abrasive milling rolls for sending out the grain having been abraded to a grain discharge portion in such a manner that the plurality of abrasive milling rolls and the rotary roll are located within the bran-removing cylinder, a gap defined between the abrasive milling rolls adjacent to each …

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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 15, 1996 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2018.
  • 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 15, 1996
GrantedDecember 21, 1999
Term endedApril 15, 2016
Patent numberCA 2174190 C
Classification (IPC)B02B3/04 +1 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedApril 15, 1996Patent grantedDec 21, 1999Term endedApril 15, 2016

Sources & verification

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