System for introducing additive into a container
CA 1297843 C · Owner: Imperial Chemical Industries Plc · Inventors: Groves, Michael H.; Cane, Michael R.; Redshaw, Digby R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for introducing a flowable additive from a capsule to paint, varnish, woodstain or the like in a closed preferably lidded, container, for example a paint container modified by the provision of a relatively easily openable inlet into the container. Preferably, the inlet is located in a lid. The capsule comprises a chamber which defines a volume which contains the additive. The system is provided with means for creating an opening in the chamber which can communicate with the inlet and means, preferably a compressible chamber, for positively expelling additive through the opening by contracting the volume which contains the additive. The capsule and container are also provided with …
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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
- Granted March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.