Liquid detergent compositions containing a suspended peroxygen bleach
CA 2094604 C · Owner: The Procter & Gamble Company · Inventors: Thoen, Christiaan A. J. K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid detergent compositions are disclosed which contain a solid peroxygen compound suspended in a liquid phase containing water and at least one water-miscible solvent and low levels of silicate which provide adequate suspension for the solid peroxygen compound in the liquid phase.
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 October 15, 1991 and granted December 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2013.
- 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.