Microbiological process for the production of 6-hydroxynicotinic acid
CA 2062667 C · Owner: Lonza Ltd. · Inventors: Kiener, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microbiological process for the production of 6-hydroxynicotinic acid starting from 3-cyanopyridine. For this process, new microorganisms are used which are, capable of growing with 3-cyanopyridine as the sole carbon nitrogen and energy source and of biotransforming it to 6-hydroxynicotinic acid.
Read the whole patent
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
- Filed March 11, 1992 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2014.
- 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.