Stabilized reagent and method for determining creatine kinase
CA 2312758 C · Owner: Roche Diagnostics Gmbh · Inventors: Mistele, Juergen; Nagel, Rolf; Schroeder, Norbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stabilised reagent for photometric enzymatic determination of creatine kinase (CK) in biological sample material by forming ATP from creatine phosphate and ADP and detection of the ATP thus formed containing an organic or inorganic sulphur compound, preferably with a molar deficiency in relation to the added CK activator. A corresponding reagent remains stable at 2-8 ~C for up to 12 months without incurring any significant functional loss.
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
- Filed December 9, 1998 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2020.
- 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.