Electric double-layer capacitor
CA 2496544 A1 · Owner: Masuda, Gen · Inventors: Kotani, Mitsugu; Masuda, Gen; Iizuka, Shunsuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric double-layer capacitor comprising a pair of polarized electrodes a separator interposed between these polarized electrodes and an electrolyte, wherein polarized electrodes used mainly contain active carbon having the peak of the pore diameter distribution of a micro-hole determined by an MP method within 4.0 × 10-10 to 8.0 × 10-10 m, and the electrolyte used contains an ionic liquid as an electrolytic salt whereby providing an , electric double-layer capacitor being excellent in low-temperature characteristics and high in electrostatic capacity
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 August 22, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2025.
- 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.