Process for the production of oligoglycerol mixtures of high diglycerol content
CA 2091687 A1 · Owner: Behr, Arno · Inventors: Biermann,Manfred; Hachgenei, Johannes; Behr, Arno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Oligoglycerol mixtures of high diglycerol content can be obtained by condensation of glycerol in the presence of silicate compounds, continuous removal of the water of condensation from the reaction mixture and termination of the reaction when the quantity of water theoretically required for the formation of diglycerol has been separated.
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.