Ammonia separation using semipermeable membranes
CA 1304697 C · Owner: Laciak, Daniel Vincent · Inventors: Laciak, Daniel Vincent; Pez, Guido Perter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a process for separating ammonia from mixtures of other gases or from aqueous streams. The ammonia-containing mixture is contacted with a membrane containing as the active component, a salt having the structural formula: NR? Xwherein each R is, independently H or a straight chain or branched alkyl group and X- is an organic or inorganic anion. The said membrane is useful for the selective permeation of ammonia from mixtures of gases containing ammonia nitrogen and hydrogen.
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 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 2009.
- 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.