Insulin precursors, process for their preparation and process for the preparation of human insulin
CA 1340823 C · Owner: Thim, Lars · Inventors: Norris, Kjeld; Thim, Lars; Hansen, Mogens Trier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel human insulin precursors of the, formula B-X-Y-A wherein X and Y are, each lysine or arginine are prepared, by culturing a yeast host transformed with a replicable expression vehicle, capable of expressing a DNA-sequence encoding the human insulin precursors, in yeast. Human insulin is prepared by recovery of the insulin precursors from the culture medium and converting the, insulin precursors into human insulin by enzymatic treatment.
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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
- Granted November 16, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 2016.
- 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.