Cannabinol derivatives and improved immunoassay
CA 1293213 C · Owner: F. Hoffmann-La Roche Ag · Inventors: Schwartz, Alan; Mcnally, Alan Joseph; Usategui, Magdalena
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel cannabinol derivatives are provided which can be used in improved immunoassays for the detection in blood or urine samples of cannabinol metabolites. The novel cannabinol derivatives are of the formula: where R is an, attachment chain selected from the group consisting of a p-aminobenzyl group or a branched or linear aminoalkyl group having from 1 to 7 carbon atoms or an organic or mineral acid addition salt thereof, an isocyanate or isothiocyanate derivative of the p-aminobenzyl or aminoalkyl group, a carboxyl terminated derivative of the aminoalkyl group having from 1 to 7 carbon atoms or a salt thereof, and an activated derivative of the carboxyl terminated derivative.
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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
- Granted December 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2008.
- 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.