Dechlorination of aqueous alkali metal chloride solution
CA 1308034 C · Owner: Kelham, Stephen F. · Inventors: Kelham, Stephen F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for dechlorinating a chlorine- containing aqueous solution of an alkali metal chloride which process comprises contacting the solution with a face of a porous membrane of a hydrophobic material and contacting an aqueous liquid with an opposite face of said membrane. The porous membrane may be a porous film of polytetrafluoroethylene.
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, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.