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Expired Canadian patentCanada

Water conditioning device

CA 1312042 C · Owner: Liff Industries (Southern) Ltd. · Inventors: Ashbee, David W.; Walker, David

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 conditioning device (1) comprises a housing (3) accommodating a plurality of magnets (19) in holders (11). Two end caps (7) provide a connection to pipes of a water flow system whereby the water is conditioned as it flows through the housing and past the magnets.

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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 December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 14, 1987
GrantedDecember 29, 1992
Term endedDecember 29, 2009
Patent numberCA 1312042 C
Classification (IPC)B01J19/08 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJan 14, 1987Patent grantedDec 29, 1992Term endedDec 29, 2009

Sources & verification

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