Non-aqueous battery
CA 2211615 C · Owner: Asahi Kasei Emd Corporation · Inventors: Yamashita, Masaya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nonaqueous battery which comprises unit battery layers in a battery jar each unit battery layer composed of a positive electrode plate having a positive electrode active material only on one side of a collector foil a , negative electrode plate having a negative electrode active material only on one side of a collector foil and a separator and in which a surface of the , positive electrode plate having thereon the positive electrode active material and a surface of the negative electrode plate having thereon the negative electrode active material face each other through the separator and a surface , of the positive electrode plate not having thereon the positive electrode active …
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 25, 1996 and granted February 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2018.
- 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.