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Expired Canadian patentCanada

De-ionizing solutions by combined electrolysis and centrifugal force

CA 1046449 A · Owner: Gazda, Hans O. E. · Inventors: Gazda, Hans O. E.

CIPO record

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

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Abstract From the Canadian patent

An apparatus and method for de-ionizing solutions for example, desalination of sea water. The method consists of accelerating the solution through a passage which has alternating narrow and wide portions and one side of which is at a relatively higher electrical potential than the other side the ions migrating to opposite sides of the passage being allowed to leave the passage to flow in subsidiary channels. The apparatus consists of a passage having alternating narrow and wide portions means for accelerating, the solution through the passage means for producing a potential difference across the passage, and subsidiary channels to opposite sides of the passage for receiving flows of ions …

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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 January 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 16, 1979
Term endedJanuary 16, 1996
Patent numberCA 1046449 A
Classification (IPC)C02F1/46

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 16, 1979Term endedJan 16, 1996

Sources & verification

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