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Expired Canadian patentCanada

Immunological determination

CA 1102789 A · Owner: Hoffmann-La Roche Limited · Inventors: Hawley, Douglas E.; Tonkes, Peter G.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A b s t r a c t, The present invention relates to a reagent for the d??ermination of an immunologically active material comprising, the immunologically active material or a receptor which can specifically bind said immunologically active material labelled, with a substance capable of modifying the extent or the mode of activity of an enzyme.

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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 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
  • 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 24, 1978
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102789 A
Classification (IPC)C07D489/04 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedFeb 24, 1978Patent grantedJune 9, 1981Term endedJune 9, 1998

Sources & verification

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