Substituted 1,2,3-triazol-3-ones
CA 2189698 C · Owner: Babczinski, Peter · Inventors: Schmidt, Robert R.; Babczinski, Peter; Santel, Hans-Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a triazolinone of the general formula (IIa), (IIa), in which either (1) A1 represents di-(C1-C4-alkyl)-amino and A2 represents hydrogen, or represents C1-C6-alkyl which is optionally substituted by fluorine chlorine, bromine, cyano, C1-C4-alkoxy C1-C4-, alkyl-carbonyl or C1-C4-alkoxy-carbonyl or, represents C3-C6-cycloalkyl which is optionally substituted by fluorine, chlorine bromine and/or C1-C4-alkyl, or represents C1-C4-alkoxy;, or in which, (2) A1 represents and A2 represents OCH3 CH3, OCH3 C2H5, OCH3 C3H7, OC2H5 C2H5 OCH3 CH(CH3)2, OCH2C6H5 CH3, OC2H5 C3H7 OCH3 C4H9, OCH3, OC2H5 CH3, OC3H7 C3H7 OCH2-CH=CH2 CH3, O-CH2-CH=CH2 C2H5, O-CH2-CH=CH2 C3H7 …
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 10, 1990 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2012.
- 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.