Sulfur oxide removal from gas
CA 1109647 A · Owner: Combustion Engineering, Inc. · Inventors: Nofal, Abb A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A POLLUTANT TO BE REMOVED, THE GAS IS PASSED THROUGH THE TWO ZONES IN SERIES AND SCRUBBED WITH AQUEOUS SOLUTIONS. THE PH LEVEL IS CON- TROLLED IN EACH ZONE TO MINIMIZE THE AMOUNT OF CHEMICAL ADDED TO THE SOLUTIONS AND MAXIMIZE THE EFFICIENCY OF THE SULFUR OXIDE REMOVAL.
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 September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.