Electret articles and filters with increased oily mist resistance
US6238466A · kind A · utility
51Cited by
21References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/227
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Novel electret articles containing a polymer and a performance-enhancing additive can be identified by their thermally stimulated conductivity characteristics or their filtration properties. Electret articles such as nonwoven filter webs and respirators exhibit superior oily mist loading performance, low penetration and a small pressure drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.