Expired Canadian patentCanada
Treated porous carbon black cathode and lithium based, nonaqueous electrolyte cell including said treated cathode
CA 2106546 C · Owner: Wade, William L. Jr. · Inventors: Mammone, Robert J.; Binder, Michael; Wade, William L. Jr.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A porous carbon black cathode is treated by brief exposure to a low pressure, room temperature gas plasma. The treated cathode is suitable for inclusion in a lithium based nonaqueous electrolyte cell.
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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
- Filed September 20, 1993 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 20, 1993
GrantedSeptember 5, 2000
Term endedSeptember 20, 2013
Patent numberCA 2106546 C
Classification (IPC)H01M4/06 +2 more
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.