Liquid dispensing means
CA 2013969 C · Owner: Cregan, Ronald James · Inventors: Cregan, Ronald James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid dispensing means for a container comprises a closure fitted to the container and adapted to allow the passage of liquid therethrough when the internal pressure in the container exceeds ambient pressure and incorporating a closing member movable between an open and a closed position in which positions liquid flow is respectively permitted or prevented and an overcap operatively engaged with closing member and removable therefrom only when the closing member is in the closed position . A method of introducing liquid detergent into a washing machine using the dispensing means.
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 April 5, 1990 and granted July 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2012.
- 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.