Patent Yard Sign in
Expired Canadian patentCanada

Apparatus and method for electrostatically powderspraying, particularly of enamel

CA 1103101 A · Owner: Ferro Corporation · Inventors: Davids, Tjeerd K.; Teigeler, Ary

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Powder spray operation for electrostatically spraying inorganic powders such as enamel suspensions up till now was only possible by increasing the electrical resistance by coating the particles with an organic coating but because, of the considerable hardness of the enamel powder particles an unacceptable wear in the recovery installations especially, in the exhaust system, transport system and cyclone was developed when spraying this powder in an apparatus which was known per se for the organic powder spraying operation whereby the not deposited powder was returned to a recuperation installation. It has been tried to adapt this method for inorganic powders but the organic coating of the …

Read the whole patent

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 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 1998.
  • 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, 1977
GrantedJune 16, 1981
Term endedJune 16, 1998
Patent numberCA 1103101 A
Classification (IPC)B05B14/48 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedOct 31, 1977Patent grantedJune 16, 1981Term endedJune 16, 1998

Sources & verification

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