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Expired Canadian patentCanada

Metabolically engineered bacterial strains having non-functional endogenous gluconate transporters

CA 2526595 C · Owner: Valle, Fernando · Inventors: Kumar, Manoj; Valle, Fernando; Rashid, M. Harunur

CIPO record

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Abstract From the Canadian patent

The present invention relates to engineering metabolic pathways in bacterial host cells which results in enhanced carbon flow for the production of ascorbic acid (ASA) intermediates. In particular the invention relates to , increasing the production of ASA intermediates in bacterial cells by enhancing the availability of gluconate resulting from the inactivation of endogenous gluconate transporter genes.

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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

  • Filed May 10, 2004 and granted October 7, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 2004
GrantedOctober 7, 2014
Term endedMay 10, 2024
Patent numberCA 2526595 C
Classification (IPC)C12N15/31 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 10, 2004Patent grantedOct 7, 2014Term endedMay 10, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.