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Expired Canadian patentCanada

Article for performing immunological assays utilizing organic dyes and mehtods for producing and utilizing same

CA 1340575 C · Owner: Immucor Intellectual Properties, Inc. · Inventors: Plapp, Fred V.; Eatz, Ralph A.; Sinor, Lyle T.

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Abstract From the Canadian patent

An article for performing solid-phase immunological assays and methods for performing assays utilizing the article of the invention. A solid-phase support suitable for immunological assays is stained with an organic dye that has a net-positive charge and a hydrophobic aromatic ring structure. An immunologically reactive component having a net-negative charge is immobilized by the dye to the support through non-covalent interactions. The immunologically reactive component is tightly bound by the organic dye. This is advantageous when performing immunological assays utilizing automated washing instruments. A sample of a biological fluid is added to the article having the immunologically …

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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 June 1, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 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.
FiledJuly 4, 1989
GrantedJune 1, 1999
Term endedJune 1, 2016
Patent numberCA 1340575 C
Classification (IPC)G01N33/55 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJuly 4, 1989Patent grantedJune 1, 1999Term endedJune 1, 2016

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