Levodione reductase
CA 2297440 A1 · Owner: Dsm Ip Assets B.V. · Inventors: Wada, Masaru; Shimizu, Sakayu; Nakamori, Shigeru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A levodione reductase having the following physico-chemical properties is provided:, molecular weight: 142,000 - 155,000 ~ 10.000 (consisting of four homologous subunits, having a molecular weight of 36,000 ~ 5,000); co-factor: nicotinamide adenine dinucleotide (NAD/NADH); substrate specificity: active on levodione; optimum temperature: 15 - 20°C at pH 7.0; optimum pH: 7.5; and activator: K+ Cs+, Rb+, Na+, and NH4+. Said levodione reductase which is capable of producing actinol, an important intermediate for the production of zeaxanthin from levodione, can , be, produced from a microorganism belonging to the genus Corynebacterium preferably the, microorganism Corynebacterium aquaticum AKU …
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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 January 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2022.
- 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.