Cyanide-free hemoglobin reagent
CA 1263590 C · Owner: Technicon Instruments Corporation · Inventors: Malin, Michael Joel; Benezra, Jeffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cyanide free composition for determining the total concentration of hemoglobins in a blood sample. The composition comprises an effective amount of a solution comprising acetone or a solution of an ionic surfactant at a pH sufficiently basic for the denaturation of hemoglobin and oxidation of the heme iron in said hemoglobin to form an oxidized heme-product the, absorption maxima of which is in the visible range. A method for determining thetotal concentration of hemoglobins in a blood sample is also disclosed.
Read the whole patent
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 December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
- 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.