6.alpha.-AMINO-3-AZABICYCLO ¬3.3.1 NONANE DERIVATIVES
CA 1280751 C · Owner: Karpati, Egon · Inventors: Nador, Karoly; Pellinoisz, Margit; Karpati, Egon
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 azabicyclo- 3.3.1nonanes of the general formula (I) (I), wherein, R1, R2 and R3 are C1-4 alkyl groups which are the same or different, or one of them is a benzyl group and the others are C1-4 alkyl groups, and R4 is a hydroxy group, or, an etherified hydroxy group of the formula -OR5, or, an esterified hydroxy group of the formula -OOCR6, in which the etherifying group R5 is a phenyl or benzyl group which optionally each can have a trihalomethyl substituent or one or more halogen or C1-4 alkyl substituents or is a diphenyl or benzhydryl group, and the esterifying group R6 is a C1-8 alkyl or a C3-6 cycloalkyl group or a phenyl or benzyl group which optionally …
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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 February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2008.
- 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.