Competitive thyroid hormone radio assay in a single tube
CA 1073351 A · Owner: Nuclear-Medical Laboratories · Inventors: Eisentraut, Anna M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A "single tube" thyroid hormone assay is provided whereby endogenous thyroid hormone is initially separated from a serum sample with an acid reagent and thereafter a tracer amount of radioactive labelled thyroid hormone is allowed to competitively bind with antibodies for thyroid hormone. The resulting free hormone (not bound to antibody) is separated from the hormone bound to such antibodies by contacting the solution with an aqueous solution of water-soluble sulfate salt containing a minor but effective amount of added animal serum to cause precipitation of the hormone bound to the thyroid hormone binding protein material. Thereafter, either the free hormone in supernatant fluid or the …
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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 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 1997.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.