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Expired Canadian patentCanada

Method for treating plasma and products thereof

CA 1294547 C · Owner: Klock, John C. · Inventors: Scannon, Patrick J.; Klock, John C.; Sohmer, Paul R.

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

Abstract of the Disclosure, A method for treating human blood plasma which comprises passing plasma through an immunoadsorbent zone capable of binding both anti-A and anti-B blood group antibodies and removing them from the plasma. Plasma so treated may be transfused to any recipient regardless of the recipient's blood type and it is, found that such treated plasma retains substantially all other blood proteins essential for proper physiological activity.

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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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 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 26, 1987
GrantedJanuary 21, 1992
Term endedJanuary 21, 2009
Patent numberCA 1294547 C
Classification (IPC)A61M1/34

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJan 26, 1987Patent grantedJan 21, 1992Term endedJan 21, 2009

Sources & verification

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