Improvements in or relating to cleaning
CA 2574337 C · Owner: Warwick, Jane · Inventors: Duffield, Paul John; Warwick, Jane; Coke, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid cleaning composition and a solid state catalyst are provided in combination. The solid state catalyst causes a chemical reaction in the liquid cleaning composition, when the liquid cleaning composition is brought into contact with it. The chemical reaction may increase the oxidising power of the liquid cleaning composition, or change its pH or cause gas evolution, or , release heat.
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, 2005 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.