Filter packing
US4392876A · kind A · utility
13Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1981 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Sep 15, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2938
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter packing of electrostatically spray formed microfibers, the structure of which is a foamed coating layer containing open cell pores completely surrounding a nonporous fiber core. The pores extend perpendicularly through the foamed coating and have a substantially uniform distribution in cross section. The foamed coating and the fiber core are made of the same polymer composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.