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Processes for preparing acarviosyl transferase and for using it in the conversion of acarbose homologues into acarbose for the preparation of a carbose homologues

CA 2200421 A1 · Owner: Delllweg, Hans-Georg · Inventors: Lenz, Jurgen Georg; Delllweg, Hans-Georg; Stratmann, Ansgar

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Abstract From the Canadian patent

The invention relates to acarviosyl transferase from actinomycetes mainly from, Actinoplanes sp. SE 50/110 and its mutants to a process for isolating, purifying and characterizing the enzyme, to the isolation and characterization of the acbD gene encoding the acarviosyl transferase, to the expression of the acarviosyl transferase in a heterologous host organism, to the use of the acarviosyl transferase for converting acarbose minor constituents into acarbose or for preparing acarbose homologues to the, use of the acarviosyl transferase in acarbose purification and also to the preparation of, production mutants in which formation of minor constituents is reduced by means of inactivation of …

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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 March 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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.
FiledMarch 19, 1997
GrantedNo grant recorded
Term endedMarch 19, 2017
Patent numberCA 2200421 A1
Classification (IPC)C12N15/54 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMarch 19, 1997Term endedMarch 19, 2017

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