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Expired Canadian patentCanada

Coating method and apparatus

CA 1238245 A · Owner: Freund Industrial Co. Ltd. · Inventors: Motoyama, Shimesu; Sakashita, Shizuka; Myo, Nagayoshi

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Abstract From the Canadian patent

Coating method and apparatus in which jet streams, of a high-pressure fluid are ejected in the opposed directions into a pulverization zone in a pulverizer to hit a raw material conveyed by one of the jet streams on the other and thereby pulverize the same the surfaces, of particles of the resultant raw material are coated at the same time that the pulverization is done. The raw material to be pulverized is fed into the pulverization zone with a jet stream or by a mechanical means to be then accelerated by a jet stream therein. A coating material is fed in the same direction in which a jet stream flows, or directly into the pulverization zone.

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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 June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1984
GrantedJune 21, 1988
Term endedJune 21, 2005
Patent numberCA 1238245 A
Classification (IPC)B05B7/00

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedOct 31, 1984Patent grantedJune 21, 1988Term endedJune 21, 2005

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