Method of forming successive layers of face-to-face adjacent media with calculated pore size
US7390443B1 · kind B1 · utility
11Cited by
5References
24Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 1, 2004 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Dec 15, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter media product and method of making the same wherein at least two independent filter media thicknesses of differing coarse and fine pore sizes are held in face-to-face relationship with the pore sizes being so calculated that the overall average pore size of successive thicknesses is smaller than the pore size of the finest fiber thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.