Large tube assemblies for reverse osmosis
CA 2321820 C · Owner: Nate International · Inventors: Chancellor, Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modularized filtration system (110) includes multiple production modules (160) mechanically coupled in series to form a production chain and fluidly , coupled by parallel feed fluid (122) waste fluid (134), and product fluid , (132) flowpaths. The system also includes a turbine (140A) work exchange , unit, or other energy recovery device (140) to extract energy from the waste fluid. The system may also advantageously include a pressurization device (120) for pressurizing a feed fluid (122) and provide a common drive shaft , (120C) for the energy recovery (140) and pressurization (120) devices.
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 February 25, 1999 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 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.