Process for the preparation of benzylamines
CA 1048547 A · Owner: Dr. Karl Thomae Gesellschaft Mit Beschrankter Haftung · Inventors: Pieper, Helmut; Kruger, Gerd; Keck, Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a new process for the preparation of benzylamine derivatives having interesting pharmacological properties, in particular a secretolytic and antitussive activity as well as a stimulating effect on the production of the surfactant or antiatelectasis factor of the alveoli. The new process comprises the reaction of certain benzylamine derivatives with appropriate amines whereby amino group interchange occurs. Examples of the preparation of certain of the new benzylamine derivatives by means of the new process are given.
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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
- 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.