Gravity feed batch filter water purification cartridge having multiple beds
CA 2022401 A1 · Owner: Jiambalvo, John R. · Inventors: Gentry, Jefferson L.; Jiambalvo, John R.; Gentry, Jefferson L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A container has a removable multi-bed water purification, filter with two beds or compartments that are separated by a fibrous member. The multi-bed filter reduces lead aluminum, chlorine, or the like, from water. The container has upper and lower chambers with the multi-bed filter therebetween which permit a batch filtering of water in response to a gravity feed so that water pressure is not required in order to filter water. One somewhat funnel shaped container enables a user to make a small batch of filtered water for a use such as a cup of coffee or tea, a bowl of soup or the like. Another two compartment container enables the user to make large batches of water which may be stored in a …
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 July 31, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 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.