Laminated porous membrane, process for manufacturing same and separator for battery
US10256450B2 · kind B2 · utility
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Key dates
| Filing date | Apr 7, 2014 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Aug 18, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated porous membrane includes a polyolefin porous membrane, on one surface of which projections that are made of a polyolefin and satisfy 5 μm≤W≤50 μm (W: projection size) and 0.5 μm≤H (H: projection height) are irregularly scattered at a density of 3/cm2 to 200/cm2, and a modifying porous layer laminated on the surface of the polyolefin porous membrane having the projections, wherein the modifying porous layer includes a binder with a tensile strength of at least 5 N/mm2 and inorganic particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.