Production of bacillus entomotoxins in methylotrophic yeast
CA 2101610 A1 · Owner: Koutz, Patricia · Inventors: Davis, Geneva R.; Thill, Gregory P.; Sreekrishna, Kotikanyadanam
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 a novel microbiological process for producing insecticidal toxins using recombinant DNA technology and more particularly to the production in methylotrophic yeast cells, especially those of the species Pichia pastoris, of larvicidal toxin polypeptides which are indigenous to entomocidal Bacillus spec and strains. This novel and efficient method produces large quantities of biologically active Bacillus entomotoxin compositions, by culturing cells of a species of methylotrophic yeast which harbor a heterologous gene for expressing a Bacillus entomotoxin polypeptide under conditions such that the heterologous gene ifs transcribed int he cells. The …
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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 29, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2015.
- 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.