Lithium and liquid organic electrolyte secondary electro-chemical generator
CA 2064356 C · Owner: Alcatel Alsthom Compagnie Generale D'Electricite · Inventors: Andrieu, Xavier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Secondary electrochemical generator with liquid organic lithium electrolyte cylindrical or prismatic, characterized by the fact that it includes as separator, a microsporous film of polyolefin on the side of the lithium anode and a film of cross-linked polymer which charges the said electrolyte and exerts pressure on the electrodes. The cross-linked polymer can be an ionic conductor polymer containing a polyether with two amino-terminal functions.
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 27, 1992 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2014.
- 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.