Steroid 5.alpha.-reductases
CA 2079454 C · Owner: The Board Of Regents Of The University Of Texas System · Inventors: Russell, David W.; Andersson, Stefan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are methods and compositions for the preparation of human steroid 5.alpha.-reductases by recombinant means as, well as for the use of these enzymes in screening assays for the identification of compounds which have the ability to inhibit or otherwise alter the enzymatic function of these enzymes. In particular embodiments, methods and compositions are disclosed for the preparation of steroid 5.alpha.-reductases from human sources as well as , DNA sequences which encode these enzymes. These sequences may be used directly in the preparation of genetic constructs or may , be employed in the preparation of hybridization probes for the selection of enzyme-encoding sequences from …
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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 April 25, 1991 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 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
Timeline From CIPO dates
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.