Battery packaging
CA 2398151 A1 · Owner: Alcan Technology & Management Ltd. · Inventors: Wittemer, Joseph; Muggli, Olivier Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rechargeable battery, such as, a lithium ion battery which includes a first , laminate layer having a perimeter region and a central region and a second , laminate layer having a perimeter region and a central region. The first and second laminate layers each has a metal foil an outer polymer layer bonded to , one side of the metal foil and a hot melt polymer coating on the other side of the metal foil in at least perimeter region of the metal aluminium foil. The metal foil is preferably aluminum foil. The hot melt polymer coatings in the perimeter regions of the first and second laminate are sealed together. A central chamber is formed by the central regions of the first and second …
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 January 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2023.
- 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.