Warewashing composition comprising zinc and aluminum ions and methods for manufacturing and using
CA 2531098 C · Owner: Lentsch, Steven E. · Inventors: Bartelme, Michael J.; Lentsch, Steven E.; Baum, Burton M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A warewashing detergent composition is provided according to the invention. The warewashing detergent composition includes a cleaning agent an alkaline , source, and a corrosion inhibitor. The cleaning agent comprises a detersive amount of a surfactant. The alkaline source is provided in an amount effective to provide a use solution having a pH of at least about 8. The corrosion inhibitor includes a source of aluminum ion and a source of zinc ion. Methods for using and manufacturing a warewashing detergent composition are provided.
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 28, 2004 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2026.
- 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.