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Expired Canadian patentCanada

Immunoselection method

CA 1282001 C · Owner: Bensinger, William I. · Inventors: Bensinger, William I.; Berenson, Ronald J.

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Abstract From the Canadian patent

Abstract, The selectivity of immunoselection systems employing insolubilized avidin and biotinylated specific antibody is amplified and nonspecific recovery is, improved, by employing an indirect sandwich technique using a biotin-conjugated antispecies immunoglobulin that is directed to one or more nonbiotinylated specific antibodies in conjunction with insolubilized avidin. Specific cell populations can be removed and recovered from bone marrow providing, excellent recovery of bone marrow and preservation of hematopoietic stem cells for transplantation. Mixed populations of T cells or of tumor cells can be conveniently and simultaneously removed with minimal manipulation of the marrow …

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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 March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2008.
  • 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 30, 1987
GrantedMarch 26, 1991
Term endedMarch 26, 2008
Patent numberCA 1282001 C
Classification (IPC)A61M1/38 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJan 30, 1987Patent grantedMarch 26, 1991Term endedMarch 26, 2008

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