Alkylated n-hydroxyalkyl piperidine derivatives
CA 1100505 A · Owner: Ab Ferrosan · Inventors: Nordvi, Curt H.; Hernestam, Sven E.H.; Nilsson, Nils A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel piperidine derivatives characterized in that they have the, general formula 1, (wherein either A and B each represents a hydrogen atom and D and E together represent a group R1 or D and E each represents a hydrogen atom and A and B together represent a group R1, R1 being a straight-chain or branched alkylene group (forming a spiro structure) containing 7 to 16 preferably 8-13, carbon, atoms, and R2 represents a straight-chain or branched hydroxyalkyl group containing 2 to 10 carbon atoms, preferably 2-6 carbon atoms) and acid addition, salts thereof. Processes for the preparation of these compounds are also described. These piperidine derivatives find use in the prevention of caries …
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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 5, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 1998.
- 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.