Methods for inhibiting deposition and fouling in scrubber systems
CA 2119056 C · Owner: Betzdearborn Inc. · Inventors: Brazier, Robert F.; Klatskin, Stuart D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for inhibiting the deposition of zinc iron, and mixed zinc- iron metals on the metal surfaces of a scrubber system comprising adding to said scrubber system a water soluble polymer having repeat units (a) and (b) of the structure (see formula I) wherein M is a water soluble cation. This invention is particularly effective at inhibiting zinc iron, and mixed zinc-iron deposition on the metal surfaces of the fan fan shroud and mist eliminator of the scrubber system.
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
- Filed March 15, 1994 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2016.
- 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.