Amino derivatives of thiazolo (5,4-b) pyridine-6-carboxylic acids and esters
CA 1077484 A · Owner: Denzel, Theodor · Inventors: Hoehn, Hans; Denzel, Theodor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New derivatives of thiazolo5,4-bpyridine-6carboxylic acids, esters and their salts useful as, central nervous system depressants and antiinflammatory agents, have the general formula, wherein Y is nitrogen or CR4 R, R1 and R4 each is hydro-, gen or lower alkyl and R2 and R3 each is hydrogen, lower, alkyl phenyl or di(lower alkyl)amino-lower alkyl.
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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 May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 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.