Methods for treating regulated waters with low levels of oxidizing halogens and hydrogen peroxides
CA 2293557 A1 · Owner: Brown, Geoffrey A. · Inventors: Brown, Geoffrey A.; Lines, E. Leroy Jr. (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for treating regulated waters with low levels of oxidizing halogens and hydrogen peroxide are disclosed, wherein the halogen-containing compound is provided with an erosion control agent such as glycoluril and the hydrogen , peroxide is provided with a hydrogen peroxide stabilizer such as a polyquaternary ammonium compound. Additional stabilizers to chelate metals and increase the half life of peroxide in aqueous solutions may also be added.
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 May 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2020.
- 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.