Waste water process
CA 1080663 A · Owner: Chevron Research And Technology Company · Inventors: Farrell, Thomas R.; Craig, James A.; Klett, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Waste water containing dissolved acid-gas and ammonia impurities is processed for the separate recovery of the acid gas, ammonia and recycle water. In a further aspect, a purified pyrolysis gas is produced by treating a raw pyrolysis gas product stream utilizing the aforementioned recycle water and a pair of coupled acid-gasabsorber and acid-gas-stripper columns.
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 July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
- 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.