Homophthalimides carrying amino substituents in the 2-position
CA 1076116 A · Owner: Dr. Karl Thomae Gesellschaft Mit Beschrankter Haftung · Inventors: Kobinger, Walter; Heider, Joachim; Kadatz, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new homophthalimide derivatives which possess interesting pharmacological properties and in particular in, general, an antiarrhythmic activity. Several processes for the preparation and interconversion of these compounds are described and exemplified. Examples of pharmaceutical compositions containing the new compounds are also given. The new compounds of the invention have the formula: (I), wherein A and B which may be the same or different each represents a, straight chain saturated alkylene radical containing from 2 to 4 carbon atoms, optionally substituted by a methyl or a phenyl group; R1 R2, R3 and, R4, which may be the same or different each represents 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 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 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.