Expired Canadian patentCanada
Regulation of quinolate phosphoribosyl transferase expression
CA 2287776 C · Owner: North Carolina State University · Inventors: Song, Wen; Conkling, Mark A.; Mendu, Nandini
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
DNA encoding a plant quinolate phosphoribosyl transferase (QPRTase) enzyme and constructs comprising such DNA are provided. Methods of altering quinolate phosphoribosyl transferase expression are provided.
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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 June 10, 1998 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 10, 1998
GrantedApril 3, 2012
Term endedJune 10, 2018
Patent numberCA 2287776 C
Classification (IPC)C12N15/54 +2 more
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.