A composition and method for cleaning surfaces
CA 2374112 C · Owner: Schall, Christian · Inventors: Schulhoff, Jeffrey; Schall, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition and method for cleaning surfaces having deposits such as drink , water tanks, supply water wells water filtration systems, and distributor water lines. The composition contains in combination a cleaning solution and a disinfectant, such as hydrogen peroxide or peracidic acid. The cleaning solution can include hydrochloric acid and/or phosphoric acid in combination with inhibitors, dyes and water. The composition is applied to deposits which have formed on these surfaces.
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 June 1, 2000 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2022.
- 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.