Process for the preparation of polysaccharide aqueous solutions
CA 1289096 C · Owner: Linton, John Dudley · Inventors: Linton, John Dudley; Nisbet, Timothy Michael; Godley, Andrew Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a process for the preparation of a polysaccharide aqueous solution which comprises aerobically fermenting an assimilable carbohydrate source with a polysaccharide producing microorganism of the succino-glucan type, in an aqueous nutrient medium, characterised by adding cellulase to the fermentation broth, and use of resulting solutions in enhanced oil recovery operations.
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
- Granted September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- 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.