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Expired Canadian patentCanada

Blood products for parenteral administration

CA 1306943 C · Owner: Eibl, Martha · Inventors: Eibl, Martha; Leibl, Heinz; Mannhalter, Josef

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Abstract From the Canadian patent

There are disclosed blood products for parenteral administration which are essentially free of immunemodulating components, and methods for their production. The absence of immune-modulating components is expressed by the lack or absence of down-modulation of Fc receptors in the membrane of leukocytes. The expression of the receptors for the Fc fragment of immunoglobulin G in the membrane of monocytes after, interaction with a blood product preparation is to be, reduced not at all or by 30 % at most. The blood products are obtained, - by molecular sieving of the blood products by gel permeation chromatography (gel filtration) or, - by treatment of the blood products with a molecular …

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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 September 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 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.
FiledFebruary 2, 1988
GrantedSeptember 1, 1992
Term endedSeptember 1, 2009
Patent numberCA 1306943 C
Classification (IPC)A61K35/16

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 2, 1988Patent grantedSep 1, 1992Term endedSep 1, 2009

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