Bicomponent substrate for filter element with membrane
US6409787B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jun 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter element comprises a substrate constructed from at least two different materials. A first one of the materials has a first temperature at which the first material activates. A second one of the materials is at least a partially crystalline structure and has a second temperature which is lower than the first temperature at which the second material activates. A porous membrane is supported by the substrate. An attachment is between the substrate and the membrane. The attachment results from the second material of the substrate activated at a temperature less than the first temperature to engage portions of the membrane at spaced apart locations and fix together the membrane and the substrate upon the second material cooled to a temperature less than the second temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.