Composite membrane useful as an electrode separator
CA 1330547 C · Owner: Cook, John Anthony · Inventors: Smith, Iain Stephen; Cook, John Anthony; Singleton, Raymond William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for making a polymeric ion exchange membrane comprises providing a membrane comprising a first polymeric material which defines a porous matrix and a second material, which includes a photoinitiator and which at least partially fills, and thereby blocks, the pores of the matrix and, exposing the membrane to UV radiation so as to polymerise and to crosslink the second material, the thickness of the membrane being less than 250 µm. The membrane is particularly useful as an electrode separator in an electrochemical device, allowing ionic conduction, and presenting a barrier to electrode particles, between the electrodes of the device.
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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
- Granted July 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
- 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.