High efficiency and high capacity glass-free fuel filtration media and fuel filters and methods employing the same
US9662600B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2012 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jan 18, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/1291
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
High efficiency and high capacity glass-free filtration media include a blend of synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, wherein the fibrillated cellulosic fibers are present in the media in an amount to achieve an overall filtration efficiency at 4 microns of 95% or higher and a ratio of filtration capacity to media caliper of 0.5 mg/in2/mils and greater. The filtration media is made by forming a wet laid sheet from a fibrous slurry blend of the synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, followed by drying the sheet to obtain the filtration media. Optionally, the filtration media may be provided with a resin binder and may be grooved and/or pleated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.