Substituted 2-aminothiazoles
CA 2001167 C · Owner: Bayer Aktiengesellschaft · Inventors: Marhold, Albrecht; Von Bittera, Miklos; Baasner, Bernd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 2-aminothiazole of the formula, (see formula I) in which, R1 represents hydrogen or alkyl and R2 represents a radical of the formula (see formula II); (see formula III) or (see formula V) where, R3, R4, R5 and R6 independently of one another in each case represent hydrogen, halogen, nitro alkyl, alkoxy, alkoxycarbonyl, dialkylamino alkylthio, alkylsulphinyl, alkylsulphonyl halogenoalkyl, halogenoalkoxy, halogenoalkylthio halogenoalkylsulphinyl or halogenoalkylsulphonyl X represents oxygen, sulphur, sulphinyl or sulphonyl and, Ar represents an unsubstituted aryl or a substituted aryl radical, and their physiologically tolerable acid addition salts.
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 20, 1989 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 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.