Extended life filter apparatus
US5667544A · kind A · utility
15Cited by
32References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1996 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Apr 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A particulate filter for a fluid stream being of preselected thickness with progressively increasing fibrous density from the upstream face toward the downstream face, the filter having a transversely and uniformly extending planar sheet-like adhesive barrier at a preselected location and quantity between the upstream and downstream faces thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.