Reforming
CA 2129471 A1 · Owner: Imperial Chemical Industries Plc · Inventors: Carnell, Peter John Herbert; Willis, Edwin Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reformed gas stream is produced from a gaseous hydrocarbon feedstock stream containing both carbon dioxide and sulphur compounds by, subjecting the feedstock stream to a membrane separation process thereby producing a permeate stream containing at least part of the carbon dioxide and sulphur compounds, combusting the permeate stream and recovering energy from the combustion products, subjecting the impermeate stream to desulphurisation by passage over a bed of a particulate absorbent for hydrogen sulphide thereby, producing a desulphurised impermeate stream adding steam to said impermeate, stream and subjecting the mixture of steam and said desulphurised impermeate stream to steam …
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 August 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2016.
- 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.