Derivatives of 2,4-diamino-1,3,5-triazinyl-6-phosphonic acid
CA 2086998 A1 · Owner: Cipolli, Roberto · Inventors: Masarati, Enrico; Nucida, Gilberto; Oriani, Roberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
DERIVATIVES OF 2,4-DIAMINO-1,3,5-TRIAZINYL-6- PHOSPHONIC ACID", Abstract, Derivatives of triazinylphosphonic acid having the general formula (I):, (I), obtained by means of the reaction of condensation of a cyanuric halide with an ester of phosphorous acid and subsequent reaction of substitution with a polyamine and an amine.
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 January 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2015.
- 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.