Protection of sensitive material
US4882828A · kind A · utility
27Cited by
22References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1989 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | May 5, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49112
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Sensitive material, e.g. lithium electrode material, is provided with a protective layer of fluid-impermeable material, which is subsequantly rendered permeable by altering its physical structure, e.g. by perforation, without altering its composition. The permeable material can act, for example, as an electrode separator when the resulting article is assembled into an electrolytic cell, and the protected material can be processed, e.g. rolled into thin sheets, and conveniently fed to automatic assembly apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.