Biocidal benzylbiphenyl derivatives
CA 2326159 A1 · Owner: Meerpoel, Lieven · Inventors: Meerpoel, Lieven; Heeres, Jan; Van Der Flaas, Mark Arthur Josepha
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns compounds of formula (I) stereochemically isomeric , forms thereof acid or base addition salts thereof, N-oxides thereof or , quaternary ammonium derivatives thereof wherein the dotted line is an , optional bond; X is a direct bond when the dotted line represents a bond or X , is hydrogen or hydroxy, when the dotted line does not represent a bond; R1 R2, R5 and R6 are each independently selected from hydrogen halo, hydroxy, C1-, 4alkyl, C1-4alkyloxy -SO3H, and the like; R3 and R4 are each independently selected from hydrogen, halo, hydroxy, C1-4alkyl C1-4alkyloxy, nitro, amino, cyano, trifluoromethyl or trifluoromethoxy; <u>.....</u> L is a radical of formula …
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 March 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 2021.
- 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.