Imidazole derivatives
CA 1134829 A · Owner: Hoffmann-La Roche Limited · Inventors: Ramuz, Henri; Krasso, Anna
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, "Imidazole derivatives" Tricyclic imidazole derivatives of the formula I, wherein R1 signifies a 2-pyridyl group optionally substituted by lower alkyl or lower alkoxy, n signifies the number 0 or 1, R2 signifies hydrogen or lower alkyl R3 and R4 each signify hydrogen or lower alkyl, A signifies a group of the formula -CH=CH-CH=CH- ; , ; , ; -(CH2)2-NH-;, (a) (b) (c) (d) ; -O-(CH2)m-O- or -CH2-O-(CH2)2-O- ;, (e) (f) (g) m signifies the number 2 or 3, R5, R6, R7 and R8 each signify hydrogen or lower alkyl and R9 signifies hydrogen and R10 signifies hydrogen or lower, alkyl or R9 and R10 together signify an oxo group, but with the proviso, that at least one of R3 and R4 signifies …
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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 November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.