Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for acid mist reduction

CA 1258043 A · Owner: Smith, James W. · Inventors: Smith, James W.

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

Bubbles produced at an electrode in an electrolytic process are coalesced by providing a surface-limiting, electrically inert masking device of which at least a bottom portion is submerged in the electrolyte. The masking device reduces the free surface of the electrolyte between the electrodes and this urges the gas bubbles together so that they coalesce, resulting in larger bubbles and less acid mist generation.

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 August 1, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 1, 2006.
  • 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 10, 1984
GrantedAugust 1, 1989
Term endedAugust 1, 2006
Patent numberCA 1258043 A
Classification (IPC)C25C7/06 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedOct 10, 1984Patent grantedAug 1, 1989Term endedAug 1, 2006

Sources & verification

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