Method of biosynthesis and cells therefor
CA 1283375 C · Owner: H.J. Heinz Company · Inventors: Backman, Keith C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cells are altered to enhance production of a desired compound by circumventing feedback inhibition of an isozyme that catalyzes a reaction in the the biosynthetic pathway of a desired compound by relying on expression of a gene coding for a non-feedback inhibited isozyme. Also disclosed is a method for selecting mutant cells that have a feedback resistant enzyme that catalyzes a chemical reaction in the biosynthesis of both the desired compound and in the biosynthes of a second compound that is essential for cell growth. The selection is accomplished by growing the cells in feedback-inhibiting concentrations of the inhibitor (i.e. the desired compound or one of its metabolic precursors) and …
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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
- Granted April 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2008.
- 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.