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Expired Canadian patentCanada

Method of operating an air-feed type spray booth

CA 1266560 C · Owner: Osawa, Michiaki · Inventors: Omori, Hidetoshi; Osawa, Michiaki; Inoue, Hidemasa

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 method of operating an air-feed type spray booth which comprises forcively feeding an air from an air conditioner to the inside of a spray booth by a reed ran drawing the air in the spray booth together with painting mists, or the likes by an exhaust fan through the floor of the booth and then exhausting them externally,while the direction of air streams, if any, flowing inwardly and/or outwardly of the booth through the inlet and/or outlet thereof is detected and the exhaust flow rate of the exhaust ran and/or the reed flow rate of the feed fan is variably controlled depending on the detected direction of the air streams, so as to inhibit the air streams from flowing inwardly and/or …

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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 March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 17, 1986
GrantedMarch 13, 1990
Term endedMarch 13, 2007
Patent numberCA 1266560 C
Classification (IPC)B05B16/60 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedMarch 17, 1986Patent grantedMarch 13, 1990Term endedMarch 13, 2007

Sources & verification

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