Electretized material for a dust filter
US4789504A · kind A · utility
90Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1986 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Oct 1, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/39
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electretized material for a dust filter which is made of an insulating polymer material such as polypropylene incorporated with a fatty acid metal salt in an amount of not less than 100 ppm in terms of the metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.