Filter media and devices for high temperature filtration and methods
US7985275B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2006 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Dec 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high temperature filter medium for use in a filtering operation comprising, a nonwoven fabric substrate having a physical structure and comprising a plurality of polymeric fibers, wherein at least a portion of the plurality of polymeric fibers comprise a base polymer and at least a portion of the plurality of polymeric fibers comprise a secondary polymer, and wherein the base polymer, the secondary polymer, or both bond at least a portion of the polymeric fibers together, the nonwoven fabric substrate being capable of retaining the physical structure at a filtering temperature greater than 135° C. A method for making a filter medium being capable of retaining the physical structure at a filtering temperature greater than 135° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.