Water treating device for attachment directly to a hydrant outlet
CA 2283025 A1 · Owner: Porter, Michael · Inventors: Porter, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tap water supply systems are flushed by opening fire hydrants and running potable, water through the fire hydrants for a period of time. Since potable water usually contains, chlorine, it is necessary to remove the chlorine before the water enters rivers, streams and, bays in order to protect aquatic life. This is accomplished by passing the water through a, diffuser attached to the fire hydrant which diffuser contains a mesh bag with a sodium sulfite, tablet therein.
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 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2021.
- 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.