Thiopyrano (4,3-c) pyrazoles
CA 1074323 A · Owner: E.R. Squibb And Sons · Inventors: Rovnyak, George C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Anti-inflammatory activity is exhibited by compounds having the formula, the salts thereof and the 5-oxide and 5,5-dioxide thereof wherein R1 is hydrogen, alkyl, aryl, arylalkyl or , wherein X is alkyl or aryl; and R2 and R3 are the same or different and are hydrogen, alkyl, hydroxy alkoxy, alkylthio, alkylsulfinyl, trifluoromethyl halogen, , cyano, nitro or dialkylamino; wherein the terms alkyl and alkoxy refer to groups having 1 to 8 carbon atoms and the term aryl refers to phenyl or phenyl monosubstituted with an alkyl, alkoxy, halogen or trifluoromethyl group.
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
- Granted March 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 1997.
- 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.