Method for evaluating the extent of a lithogenesis process intensity and for determining the composition of lithogenic urate salts in urolithiasis
CA 2136195 C · Owner: Shabalin, Vladimir Nikolaevich · Inventors: Shabalin, Vladimir Nikolaevich; Shatokhina, Svetlana Nikolaevna
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present method for evaluating the extent of a lithogenesis process intensity and for determining the composition of lithogenic urate salts in urolithiasis resides in adding an aqueous protein solution to a urine sample in a ratio of 9:1, 7:1 or 5:1, respectively; applying the mixture thus-prepared as a drop onto a smooth surface for drying for at least 24 hours; determining the nature of crystallization of urate salts in the marginal zone of the urine sample the, presence of separate, singly occurring crystals conglomerates of crystals and a complete crystallization of this marginal zone being indicative, respectively of a weak, moderate or a highly pronounced extent of a lithogenesis …
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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 May 6, 1993 and granted August 25, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2015.
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