Growth of cells in hollow fibers in an agitated vessel
CA 2050800 A1 · Owner: Rothberg, Melvin · Inventors: Fleig, Gordon E.; Forgach, David J.; Rothberg, Melvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hollow fiber structures for culturing mammalian cells in an agitated media are disclosed. These hollow fibers have a cylindrical wall surrounding a lumen preferably open at opposite ends of the fiber and have a length along the axis parallel to the lumen of not more than 5 centimeters. Hollow fiber structures which have their exterior surface coated to prevent cell attachment and growth thereon are also disclosed. 36,975A-F
Read the whole patent
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 September 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 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.