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Expired Canadian patentCanada

Substituted 2-phenylamino-imidazolines-(2), their acid addition salts, pharmaceuticals comprising same and processes for their production

CA 1085861 A · Owner: Boehringer Ingelheim G.M.B.H. · Inventors: Stahle, Helmut; Kummer, Werner; Stockhaus, Klaus

CIPO record

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Abstract From the Canadian patent

This invention relates to novel derivatives of 2-phenylamino-imidazoline-(2) having the formula I I, wherein R1, R2 and R3, which may be the same or different each represents a hydrogen, fluorine, chlorine or bromine atom or a methyl, ethyl, methoxy, hydroxy, trifluoromethyl or cyano group; and R4 represents a group of the formula (in which n is an integer from 2 to 5). These compounds have interesting pharmacological properties. In particular the, novel compounds exhibit analgesic and bradycardiac activities and may therefore be useful in the treatment of pain and/or coronary disease. Processes for the preparation of the novel compounds are described and exemplified and examples of, …

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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 September 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 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.
FiledAugust 12, 1977
GrantedSeptember 16, 1980
Term endedSeptember 16, 1997
Patent numberCA 1085861 A
Classification (IPC)C07D233/50

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 12, 1977Patent grantedSep 16, 1980Term endedSep 16, 1997

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.