Renaturation and activation of the proteinase k zmyogen produced in inclusion bodies
CA 2435753 A1 · Owner: Schoen, Helmut · Inventors: Geipel, Frank; Schott, Bjoern; Meier, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to recombinant proteinase K and to a method for producing recombinant proteinase K, which is characterised by the following steps: a) transformation of a host cell containing a recombinant nucleic acid that codes for the zymogenic precursor of the proteinase K b) cultivation of , the host cell in such a way that the zymogenic precursor of proteinase K occurs in the form of inclusion bodies in said host cell c) isolation of the , inclusion bodies and re-naturing under conditions from which the protease , part of the zymogenic precursor emerges in its natural conformation d) , activation and purification of the re-natured proteinase K.
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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 February 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2024.
- 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.