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Expired Canadian patentCanada

Fluid flow apparatus control and monitoring

CA 1323312 C · Owner: Shouldice, David Robert · Inventors: Powell, Daniel Allen; Brose, Tom Louis; Shouldice, David Robert

CIPO record

Overview

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

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Abstract From the Canadian patent

of the Invention, Dialysate preparation apparatus including dialysate and blood flow lines connected to a dialyzer, fluid control mechanisms on the lines to control conditions of fluid in the lines fluid, condition sensors on the lines to sense the conditions of fluid in the lines, a digital control processor receiving signals from the sensors and controlling the mechanisms to achieve desired fluid conditions, and a digital monitor processor receiving signals from the sensors and verifying that fluid conditions meet predetermined safety limits.

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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 October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
  • 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 28, 1987
GrantedOctober 19, 1993
Term endedOctober 19, 2010
Patent numberCA 1323312 C
Classification (IPC)A61M1/16 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 28, 1987Patent grantedOct 19, 1993Term endedOct 19, 2010

Sources & verification

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