Process and apparatus for recovering components of sealed type battery
CA 2199096 C · Owner: Canon Kabushiki Kaisha · Inventors: Asao, Masaya; Kawakami, Soichiro; Kobayashi, Naoya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A recovering process for recovering the constituent components of a sealed type batter comprising at least an a cathode, an anode and an electrolyte sealed in a battery housing, characterized in that said process includes a step (a) of decreasing the ionic conductivity between said cathode and anode of said sealed type battery and a step (b) of opening said battery housing of the sealed type battery after conducting said step (a). An apparatus suitable for practicing said recovering process.
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 4, 1997 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2019.
- 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.