Activation
CA 1252257 A · Owner: Interox Chemicals Limited · Inventors: Baxter, Paul L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Activation, The bleaching performance of hydrogen peroxide or persalts developing it in situ is markedly lower at lower washing temperatures from ambient to 60°C than at hot washing temperatures of around 90°C or above. The present invention relates to compositions and processes employing a minor amount of mixed oxides of calcium, barium or strontium with manganese which activate hydrogen peroxide bleaching and washing of stains at lower wash temperatures in spite of the fact that the compounds are substantially water-insoluble.
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 April 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
- 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.