Process for removing acid gases and ammonia from an aqueous solution
CA 1163951 A · Owner: Uss Engineers And Consultants, Inc. · Inventors: Glassman, Donald; Maier, Edward E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the removal of acid gases and ammonia from an aqueous solution comprises subjecting the dilute aqueous solution to a free and fixed ammonia still process (202, 211) passing an overhead vapor stream from the second still (211) through an indirect heat exchanger (207) to heat the liquid in the first still (202) and then passing the overhead vapor stream, mixed with an overhead vapor stream from the first still (202), to a condenser (220) to concentrate the ammonia in the combined vapor stream.
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 March 20, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2001.
- 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.