Protein precipitation reagent
CA 2048314 A1 · Owner: Zajac, Mariola B. · Inventors: Meucci, Victoria P.; Simpson, Elizabeth A.; Zajac, Mariola B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A precipitation reagent for use in analytical systems for the determination of hydrophobic analytes in a biological test sample particularly analytical systems employing specific binding proteins for such analytes. The precipitation reagent precipitates interfering proteins, hemoglobin, and other interfering substances from a biological test sample while, at the same maintaining, hydrophobic analytes in solution and minimizing the denaturation of specific binding proteins, such as, for example antibodies, which, may be present in an immunoassay system. The precipitation reagent comprises a zinc salt, a glycol, and a straight or branced alcohol from about 1 to 4 carbon atoms, and may …
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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
- Filed August 1, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.