Adaptation of cell lines to suspension culture
CA 1093994 A · Owner: Monsanto Company · Inventors: Feder, Joseph; Tolbert, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Densely packed cells growing rapidly in substrateattached culture are gently released from the substrate by enzymatic treatment to form aggregates ranging from 20 µ to 500 µ in diameter. These aggregates are then transferred to fresh medium in agitated liquid suspension. The cells thereby continue to grow in aggregates whereby a normally anchorage-dependent established mammalian cell line is rapidly adapted to suspension culture.
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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 January 20, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 1998.
- 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.