Process of making potable water
CA 2058983 A1 · Owner: Separation Dynamics, Inc. · Inventors: Taylor, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of disinfecting water includes the steps of passing a flow of fluid containing water and/or water soluble substances and microbes therein in contact with a nonporous water and water soluble substance permeating membrane (20) and imbibing water and/or water soluble substances through the membrane (20) while preventing passage of microbes and water insoluble hydrocarbons and halogenated hydrocarbons through the membrane (20).
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 March 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2013.
- 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.