A unit packaged detergent
CA 2199369 C · Owner: The Procter & Gamble Company · Inventors: Van De Pol, Bruno; Varlet, Jean-Luc Andre Patrick; Tack, Joris Josef Gustaaf E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a detergent for automatic dish washing packaged in a film. Said film is made of a water dissolvable material. This material is completely dissolved only after reaching the main wash of the wash cycle. Therefore, said material prevents that the detergent is precociously dissolved and wasted during the initial rinse cycle of a dish washing machine.
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 September 1, 1995 and granted February 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 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.