Lithium secondary battery
CA 2444193 A1 · Owner: Kitoh, Kenshin · Inventors: Kitoh, Kenshin; Nemoto, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a lithium secondary battery comprising a battery case made solely of, a single pipe, an internal electrode body contained in the battery case and including a, positive electrode, a negative electrode and a separator made of porous , polymer the, positive electrode and the negative electrode being wound or laminated through the, separator so that the positive electrode and the negative electrode are not brought into, direct contact with each other and first and second disks, whereby an outer structure, comprising the disks and the battery case air-tightly encloses an entirety of a space, defined within the outer structure the internal electrode holy and the , electrolyte …
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 October 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2020.
- 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.