Microporous film for electric storage device separator and electric storage device separator using the same
CA 2625083 C · Owner: Fukushima, Hajime · Inventors: Tanaka, Shigeru; Masuda, Jun'Ichi; Fukushima, Hajime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are provided a microporous film for an electric storage device separator, which can increase energy density and power density when used in an electric storage device and which , is excellent in handling properties in a processing step to the electric storage device, as well as an electric storage device separator and an electric storage device using the microporous , electric storage device separator characterized by including , film. Specifically provided is a microporous film for an a porosity of 70% or more, a strength of 40 MPa or more in a longitudinal direction, an average pore size of from 40 to 400 nm, anuclear pores, and exhibiting biaxial orientation.
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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 September 29, 2006 and granted June 18, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.