Process for the preparation of an aromatic hydrocarbon mixture
CA 1113968 A · Owner: Shell Canada Limited · Inventors: Sie, Swan T.; Schaper, Lambert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Two-stage process for the preparation of aromatic hydrocarbons comprising a first stage in which methanol is converted into dimethyl ether and a second stage in which the dimethyl ether is converted into aromatic hydrocarbons by contacting the ether at elevated temperature with a crystalline iron silicate-containing catalyst.
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 December 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 1998.
- 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.