Thiazolidinedione hypoglycemic agents
CA 1328872 C · Owner: Rizzi, James Patrick · Inventors: Rizzi, James Patrick; Clark, David Alan; Hulin, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Hypoglycemic thiazolidine-2,4-dione derivatives of the formula, ---(I), wherein the dotted line represents a bond or no bond;, A and B are each independently CH or N with the, proviso that when A or B is N the other is CH;, X is S, SO, SO2, CH2 CHOH or CO;, n is 0 or 1;, Y is CHR1 or NR2 with the proviso that when n is, 1 and Y is NR2 X is SO2 or CO;, Z is CHR3, CN2CH2, CN=CH , OCH2, SCH2, SOCH2 or SO2CH2;, R, R1, R2 and R3 are each independently hydrogen or methyl; and, X1 and X2 are each independently hydrogen methyl, trifluoromethyl, phenyl, benzyl hydroxy, methoxy, phenoxy, benzyloxy, bromo chloro or fluoro;, a pharmaceutically-acceptable cationic salt thereof; or a …
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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 April 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 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.