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Expired Canadian patentCanada

Disposable centrifugal blood processing system

CA 1068658 A · Owner: Baxter Travenol Laboratories · Inventors: Cullis, Herbert M.

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

Herbert M. Cullis, Abstract of the Disclosure A continuous flow centrifugal processing system for separating whole blood into fractional components includes a centrifugal separator unit having a molded bowl shaped outer shell dimensioned to fit within a rotatably-driven casing on an associated centrifuge apparatus. A bowl-shaped inner shell disposed within the outer shell forms therewith a thin separation channel radially spaced from the axis of rotation wherein fractions are separated from the whole blood under the influence of centrifugal force. A rotating seal carried on the processing chamber between ports in the chamber and the non-rotating portions of the system. The outer shell …

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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 25, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 25, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedDecember 25, 1979
Term endedDecember 25, 1996
Patent numberCA 1068658 A
Classification (IPC)B04B11/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedDec 25, 1979Term endedDec 25, 1996

Sources & verification

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