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Expired Canadian patentCanada

Magnetic water treatment apparatus and method of treating water

CA 1191110 A · Owner: Van Gorp, Donald J. · Inventors: Van Gorp, Donald J.

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

A water treatment apparatus includes a section of pipe arranged at the center of an electromagnetic force field created by a solenoid coil or the like positioned about the periphery of the pipe. A metal stationary rod is supported within the pipe and electrically insulated from the pipe such that water directed through the pipe passes by the rod. The rod is supported at both ends by insulated bearings secured within the pipe.

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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 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 14, 1983
GrantedJuly 30, 1985
Term endedJuly 30, 2002
Patent numberCA 1191110 A
Classification (IPC)C02F1/48

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 14, 1983Patent grantedJuly 30, 1985Term endedJuly 30, 2002

Sources & verification

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