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Expired Canadian patentCanada

Method of intermittent powder coating

CA 1285751 C · Owner: Nordson Corporation · Inventors: Watanabe, Takashi

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

The specification describes a method for intermittently spray coating a powder. During spray coating a mixture of a powder and a gas is ejected continuously and constantly from a gun nozzle. The mixture is discharged by an air ejector through a bypass route. Intermittent spraying is achieved by intermittent operation of the air ejector. A gun adapted to carry out the method is also described.

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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 July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 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.
FiledJanuary 30, 1987
GrantedJuly 9, 1991
Term endedJuly 9, 2008
Patent numberCA 1285751 C
Classification (IPC)B05B7/14 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJan 30, 1987Patent grantedJuly 9, 1991Term endedJuly 9, 2008

Sources & verification

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