Amine oxide composition and process
CA 2081667 A1 · Owner: Albemarle Corporation · Inventors: Borland, James E.; Smith, Kim R.; Sauer, Joe D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pourable amine oxide composition which is suitable for use in detergent compositions is obtained by reacting a tert-amine with aqueous hydrogen peroxide in a normally liquid polyethylene glycol or a nonionic surfactant as the sole organic solvent at least a, portion of any nonionic surfactant being a fatty alcohol ethoxylate alkylphenol ethoxylate, fatty alkanolamide or other compound, corresponding to one of the formulas ZOC(Z')HCH2mOH TOC(Z')HCH2mOH, and ZC(O)NZZ'', in which T is an alkylphenyl group in which the alkyl group contains 4-30 carbons Z is an alkyl , group containing 4-30 carbons Z' is hydrogen or an alkyl or, hydroxyalkyl group containing 1-3 carbons Z'' is a hydroxyalkyl, …
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 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2013.
- 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.