Method of producing lower polyols and mixtures thereof
CA 2066796 A1 · Owner: Casale, Bruno · Inventors: Marini, Luigi; Casale, Bruno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing lower polyols and mixtures thereof comprising the hydrogenation and hydrogenolysis under pressure of higher polyols is carried out in the presence of a platinum-based catalyst supported on an inert substrate and modified by sulphides in order to increase its selectivity towards the production of glycols.
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 April 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2014.
- 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.