Phenylacetaldehydes substituted by basic groups, their preparation and drugs containing these compounds
CA 1268471 C · Owner: Raschack, Manfred · Inventors: Seitz, Werner; Ruebsamen, Klaus; Raschack, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Phenylacetaldehydes which are substituted by basic groups, of the formula:, where R1 to R8 m and n have the meanings stated in the description, and their preparation are described. The substances are useful for the circulatory disorders including cardiac diseases, high blood pressure disturbances of blood flow and in the treatment of gastric and duodenal ulcers.
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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 1, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 1, 2007.
- 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
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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.