Hydrogen peroxide disinfectant with increased activity
CA 2344471 C · Owner: Rochon, Michael J. · Inventors: Rochon, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acidic aqueous hydrogen peroxide solution is provided with improved , disinfectant activity. Concentrated solutions preferably contain up to about 8 % and as-used concentrations contain about 0.5 % peroxide. The solution also contains from 0.1 to 5.0 % of at least one acid compound, e.g. phosphoric and/or a phosphonate with from 1 to 5 phosphonic acid groups, and from 0.02 to 5 % of at least one anionic surfactant. The surfactant is selected from C8 to C16-alkyl aryl sulphonic acids, sulphonated C12 to C22 carboxylic acids C8 to, C22-alkyl diphenyl oxide sulphonic acids naphthalene sulphonic acids, C8 to , C22 alkyl sulphonic acids and alkali metal and ammonium, salts thereof and …
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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 November 26, 1999 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2021.
- 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.