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Expired Canadian patentCanada

Suspended solids extraction system and method

CA 1083530 A · Owner: King, Arthur S. · Inventors: King, Arthur S.

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

A liquid containing suspended solids is first passed through an electrostatic treater, having no current flow across its electrodes, to initiate nucleation and coagulation of the particles. Thereafter, it passes through an electrolytic treater wherein current may flow between the electrodes to further encourage coagulation to such an extent that flocculation begins. The residual effects of the electrostatic treater prevent plating out on the electrodes of the electrolytic treater such that electrolysis can occur without sacrificing an electrode and the, electrodes are so arranged that the liquid passes sequentially through groups of concentrated lines of force whose repetitious powerful …

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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 August 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 14, 1977
GrantedAugust 12, 1980
Term endedAugust 12, 1997
Patent numberCA 1083530 A
Classification (IPC)B01D57/02 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedJune 14, 1977Patent grantedAug 12, 1980Term endedAug 12, 1997

Sources & verification

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