Apparatus and method for separating a charged substance from a conductive fluid
CA 2187538 C · Owner: Berg, Sol L. · Inventors: Berg, Sol L.; Crose, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method for removing a charged substance from a conductive fluid by imposing an electrostatic field on the conductive fluid, the charged substance being drawn to and retained by a charged substance receiving member having a core of a conductive material and an outer surface of a nonconductive material.
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 23, 1995 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2017.
- 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.