Purification of recombinant ciliary neurotrophic factor and c-terminal truncated ciliary neurotrophic factor and methods for treating peripheral nerve damage
CA 2113815 A1 · Owner: Wilhelm, Larry J. · Inventors: Collins, Franklin D.; Bonam, Duane M.; Freund, Erwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods are provided for the production and purification of recombinant ciliary neurotrophic factor. The purification of C-terminal truncated forms of ciliary neurotrophic factor are also described. Methods are provided for preventing and treating peripheral nerve damage. The method comprises administering to patients in need thereof a therapeutically effective amount of CNTF. A preferred method for producing CNTF is by recombinant DNA technology.
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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 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2014.
- 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.