Water contaminant indicators
CA 2487010 C · Owner: Rinker, Edward B. · Inventors: Rinker, Edward B.; Joyce, Patrick C.; Lynch, Toni L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filtering device for a gravity-flow liquid treatment system includes a first filter , component that can be either exposed or adjacent to a substantially transparent region in at , least a portion of a filter housing. The first filter component is capable of providing a visual , indication of exposure to at least one contaminant. The contaminants for which the first , filter component can indicate exposure include particles inorganic, and , organic , contamination. Particle contamination is indicated by a change in color of the first filter , component through particle collection. Inorganic and organic contaminants are indicated by , reaction with at least one agent capable of …
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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
- Filed November 8, 2004 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.