A detergent composition and method for warewashing
CA 2205034 C · Owner: Uhlhorn, Robert Jan · Inventors: Lansbergen, Adrianus Joost; Uhlhorn, Robert Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chemical cleaning system and a method of using the same in multiple zone mechanical warewashing is described. The cleaning system contains at least two separate components for aqueous dissolution or dilution to respective use concentrations, the system comprising a cleaning agent a bleach and enzyme. , Each component is dissolved or diluted to the use concentration and introduced sequentially into the warewashing apparatus.
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 November 10, 1995 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2017.
- 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.