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Expired Canadian patentCanada

High molecular compound comprising unit of asialoglyco-protein acceptor-directing compound and unit of chelate-forming compound chemically bonded thereto, and its utilization

CA 1340556 C · Owner: Kurami, Miki · Inventors: Ueda, Nobuo; Kurami, Miki; Washino, Komei

CIPO record

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Abstract From the Canadian patent

A high molecular weight compound useful as a non-radioactive carrier, which comprises at least one unit of (1) an asialoglycoprotein acceptor-directing compound and at least one unit of (2) a chelate-forming compound chemically bonded thereto, and which may be labeled with a radioactive metallic element to give a radioactive metallic element-labeled product useful as a radioactive diagnostic or therapeutic agent for the treatment of liver disorders.

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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 May 25, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 30, 1987
GrantedMay 25, 1999
Term endedMay 25, 2016
Patent numberCA 1340556 C
Classification (IPC)A61K51/08 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedDec 30, 1987Patent grantedMay 25, 1999Term endedMay 25, 2016

Sources & verification

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