Bioluminescence assay for gene expression in growing mammalian cells
CA 2044680 A1 · Owner: R.O.B.I.T. Research And Development Company Ltd. · Inventors: Honigman, Alexander; Honigman, Alexander; Israel, Shoshana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for detecting the presence of a certain substance in a medium is provided which is based on the use of genetically engineered tester cells which are capable of absorbing and of expressing the luciferase enzyme in the presence of said substance in their surrounding medium. In the performance of this method, cells are incubated with a tested medium and light generation under appropriate conditions is monitored, light generation above background levels being an indication of the presence of said substance in the tested medium. 82102.IC:lk/rrb
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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 14, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2013.
- 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.