Process for obtaining water-soluble saccharides from cellulose-containing material
CA 1181397 A · Owner: Hoechst Aktiengesellschaft · Inventors: Schlingmann, Merten; Erckel, Rudiger; Franz, Raimund
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Water-soluble saccharides (mainly glucose and oligomeric glucose) are obtained by treating cellolignin with gaseous hydrogen fluoride - optionally diluted with an inert gas - at temperatures between about 20 and 120°C, preferably between about 40 and 80°C. The cellolignin used is a natural cellulose-containing material which has been pre-hydrolyzed with dilute mineral acids,or else waste paper or the like of low hemicellulose content. The water-soluble saccharides obtained by the process can be subjected to further processing in a known manner.
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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 22, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2002.
- 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.