Growth hormone crystals and a process for production of these gh-crystals
CA 2086087 C · Owner: Novo Nordisk A/S · Inventors: Junker, Flemming; Theisen, Claus F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for production of canon crystals of GH (Growth Hormone) or of GH derivatives. The process comprises the following steps: (a) to a solution of GH, or a derivative thereof is added cations of inorganic or organic nature and at least one, organic solvent at a pH in the range of from about 5.0 to about 6.8; (b) growing of, crystals at a temperature in the range of from about 0° to about 30°C; and (c), isolation of the cation crystals. An aspect of the invention also relates to cation, crystals of hGH (human Growth Hormone) or hGH derivatives.
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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 July 12, 1991 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2013.
- 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.