Electrical rechargeable battery in the form of a button cell
CA 2292108 A1 · Owner: Ilic, Dejan · Inventors: Kilb, Manfred; Pytlik, Eduard; Weitbrecht, Siegfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical accumulator having a case in the form of a button cell which is closed, such that it is gastight, including a case cover and a case cup with an interposed electrically, insulating seal which contain an electrode set including positive and negative electrodes as, well as interposed separators with at least two electrodes of one polarity being mechanically, and electrically connected at at least two points on their circumference in such a mariner that, a mechanically robust electrode packet results. The invention furthermore relates to a, method for producing such a rechargeable battery.
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 December 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2021.
- 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.