Unsaturated amino acids
CA 1331625 C · Owner: Novartis Ag · Inventors: Fagg, Graham Eric; Brundish, Derek Edward; Angst, Christof
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Unsaturated amino acids, Abstract, The invention relates to unsaturated amino acids of the formula I, (I), in which R1 represents hydroxy or etherified hydroxy R2 represents hydrogen, alkyl, hydroxy or etherified hydroxy, R3 represents hydrogen, alkyl haloalkyl, hydroxyalkyl, lower alkoxyalkyl arylalkyl, lower, alkenyl, halogen or aryl R4 represents hydrogen, alkyl or aryl, R5 represents hydrogen or alkyl R6, represents carboxy or esterified or amidated carboxy R7 represents amino or amino substituted by alkyl or acyl, A represents unsubstituted or alkyl-substituted .alpha..omega.-alkylene having from 1 to 3 carbon atoms or represents a bond, and B represents methylene or a bond, with the …
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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 August 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 2011.
- 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.