Novel carbonyl reductase, gene coding same, and method for using such reductase and gene
CA 2280502 A1 · Owner: Kawabata, Hiroshi · Inventors: Kizaki, Noriyuki; Yamamoto, Kazuhiko; Kita, Keiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An enzyme having the activity of asymmetrically reducing a carbonyl compound to an optically active alcohol, a DNA which encodes the enzyme a plasmid , having the DNA, cells transformed by the plasmid and a process for producing , optically active alcohols with the enzyme and/or the transformed cells.
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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 September 1, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 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
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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.