Culturing apparatus and cultivating method
CA 2294901 A1 · Owner: Grain Processing Corporation · Inventors: Tsao, George T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a culturing apparatus (100) that includes a gas-permeable solid phase culturing bed (110) disposed within an interior space of a vessel (108). The culturing bed comprises a solid substrate that includes a biological agent disposed thereon. A gas inlet (115, 116) permits selective introduction of gas into the vessel (108) under pressure sufficient to cause gas to flow through at least a portion of the bed (110). Also disclosed is a method of cultivating a biological agent. The method comprises providing a gas-permeable culturing bed, flowing a gas through the bed and recovering at least a portion of the biological agent. The gas preferably is an oxygen-containing gas …
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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 April 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2021.
- 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.