Novel bacterial strains and use thereof in fermentation processes for 2-keto-l-gulonic acid production
CA 2269771 C · Owner: Stoddard, Steven F. · Inventors: Stoddard, Steven F.; Yang, Yueqin; Eddington, John M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process for the production of 2-keto-Lgulonic acid by fermentative conversion of L-sorbose and/or D-sorbitol. The present invention further relates to novel bacterial strains useful in this process.
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 October 23, 1997 and granted January 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2019.
- 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.