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Expired Canadian patentCanada

Integral hydraulic circuit for hemodialysis apparatus

CA 1104458 A · Owner: Baxter Travenol Laboratories, Inc. · Inventors: Goldhaber, Richard P.; Toch, Theodore H.; Bellotti, Marc

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 one-piece hydraulic circuit is provided for use with a blood dialyzer for performing functions currently performed with a multiplicity of blood inlet and outlet sets and related items comprising flexible tubing and the like.

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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 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 1980
GrantedJuly 7, 1981
Term endedJuly 7, 1998
Patent numberCA 1104458 A
Classification (IPC)A61M1/14 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedJuly 14, 1980Patent grantedJuly 7, 1981Term endedJuly 7, 1998

Sources & verification

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