Multi-layer microporous film
US8338020B2 · kind B2 · utility
4Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jun 8, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249978
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Embodiments of the invention relate to microporous membranes that include first and second layers. The first layer includes ≦20.0 wt. % polymethylpentene and the second layer includes a compatibilizer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.