Filter materials and methods for the production thereof
US6623548B1 · kind B1 · utility
25Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Sep 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrostatically charged filter material including a blend of polypropylene fibres and one selected from the group consisting of: halogen free acrylic fibres; polyvinyl chloride fibers or a mixture of halogen free acrylic fibres and polyvinyl chloride fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.