Dna encoding the bacillus licheniformis pwd-1 keratinase
CA 2191222 C · Owner: North Carolina State University · Inventors: Lin, Xiang; Miller, Eric S.; Shih, Jason C. H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An isolated DNA encoding a keratinase is disclosed. The isolated DNA may be any of (a) isolated DNA which encodes the Bacillus licheniformis PWD-1 keratinase enzyme of Figure 1, (b) isolated DNA which hybridizes to an oligonucleotide probe which hybridizes, to the DNA of (a) above and does not hybridize to DNA, encoding the Bacillus licheniformis NCIB 6816 subtilisin Carlsberg serine protease, and (c) isolated DNA differing from the isolated DNAs of (a) and (b) above in nucleotide sequence due to the degeneracy of the genetic code and, which encodes a keratinase enzyme.
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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 May 5, 1995 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2017.
- 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.