Process and device for cleaning surfaces which are heavily soiled with grease, starch and/or proteins, especially in the food processing industry
CA 2269490 A1 · Owner: Johnsondiversey, Inc. · Inventors: John, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for cleaning surfaces which are heavily soiled with grease starch , and/or protein residues, especially for the food processing industry in which , the soiled surfaces are treated with an alkaline foam cleaning agent characterized in that an effective amount of hydrogen peroxide solution is dosed to the chlorine-free alkaline foam cleaner at the latest 60 seconds before contact with the surface to be treated in order to obtain an effectively cleaning hydrogen peroxide foam. This avoids the use of chlorine which is harmful with respect to the environment the hydrogen peroxide foam , is surprisingly stable and the microbiological activity is unexpectedly good. A device which is …
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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 October 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2019.
- 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.