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Expired Canadian patentCanada

Cleaning device upon color-change in an electrostatic multi-color coating apparatus

CA 1285136 C · Owner: Moritani, Michitaka · Inventors: Takaba, Hirotsugu; Matsumura, Teruaki; Suzuki, Noriyasu

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

The present invention provides a cleaning device upon colorchange in an electrostatic multi-color electrostatic coating apparatus comprising: a first color change device comprising a first manifold including valves for supplying respective paints of different colors, a cleaning air, and a cleaning thinner selectively through a first paint supply channel; a second colorchange device smaller in size than said first color-change device, disposed near the electrostatic coating machine and comprising a second manifold including valves for supplying respective paints of different colors, a cleaning air and a cleaning thinner selectively through a second paint supply channel; and a valve mechanism …

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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 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 3, 1986
GrantedJune 25, 1991
Term endedJune 25, 2008
Patent numberCA 1285136 C
Classification (IPC)B05B15/55 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedFeb 3, 1986Patent grantedJune 25, 1991Term endedJune 25, 2008

Sources & verification

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