Method and reagents for detecting amphetamine and/or d-methamphetamine in biological samples
CA 2001696 A1 · Owner: Heiman, Daniel Feulner · Inventors: Heiman, Daniel Feulner; Johnson, Sharon Ann; Hu, Hsiang-Yun Yang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
METHOD AND REAGENTS FOR DETECTING AMPHETAMINE AND/OR d-METHAMPHETAMINE IN BIOLOGICAL SAMPLES ABSTRACT OF THE DISCLOSURE, This disclosure relates to a method and reagents for determining amphetamine and d-methamphetamine in a biological fluid such as urine. In particular, this disclosure relates to improvements in a fluorescence polarization immunoassay procedure for determining the presence of amphetamine and d-methamphetamine in a single assay and to a novel class of tracer compounds employed as reagents in such procedures. The procedure described includes pretreatment of the biological sample to eliminate cross-reactants such as .beta.-hydroxyphenethylamine by preincubating the sample …
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 October 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2011.
- 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.