Method for the production of bead dextran materials for gel chromatography
CA 1263379 C · Owner: Svec, Frantisek · Inventors: Peska, Jan; Svec, Frantisek; Lenfeld, Jiri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the production of bead dextran materials for gel chromatography, wherein dextran is be-, fore or during the suspension process or in both stages subjected to reduction in an alkaline solution advanta-, geously by the action of sodium borohydride. The density of crosslinking is controlled above all by variation of the concentration of the initial dextran solution and the resulting gel is optionally subjected to the additional crosslinking in a separate subsequent operation. The procedure according to the invention provides the product of higher quality with a lower content of carboxylic groups and substantially facilitates the preparation of gels with a very high and a very low …
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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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
- 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
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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.