Stain treating composition and process
CA 2493031 A1 · Owner: Sidoti, Anthony Domenic · Inventors: Spadoni, Luca; Sidoti, Anthony Domenic; Franzolin, Giorgio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for stain removal at a surface comprising applying to that surface , a mixture of at least two aqueous compositions: (a) an aqueous composition comprising a source of active oxygen having a pH of greater than 0 but less than 7 hereinafter component (a) and (b) an aqueous composition hereinafter component (b) comprising an enzyme, wherein components (a) and/or (b) additionally comprise at least one surfactant or water-soluble polymer and are mixed not more than two hours before being applied to the surface requiring stain removal.
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 July 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2025.
- 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.