Novel aldolase and production process of substituted .alpha.-keto acids
CA 2714881 C · Owner: Ajinomoto Co. Inc. · Inventors: Sugiyama, Masakazu; Watanabe, Kunihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
4-(Indol-3-ylmethyl),4-hydroxy-2-oxoglutarate which is useful as an intermediate in the synthesis of monatin may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas Erwinia, Flavobacterium, or Xanthomonas.
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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 August 26, 2003 and granted October 23, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2025.
- 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
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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.