Using mutations to improve aspergillus phytases
CA 2498017 C · Owner: Ullah, Abul H. J. · Inventors: Lei, Xingen; Ullah, Abul H. J.; Mullaney, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an isolated nucleic acid molecule encoding a mutant phytase and the isolated mutant phytase itself. The present invention further relates to methods of using the isolated nucleic acid molecule and the isolated mutant phytase of the present invention.
Read the whole patent
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 September 15, 2003 and granted June 14, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2025.
- 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.