Gas-selective permeable membrane and method of manufacturing thereof
US7141096B2 · kind B2 · utility
9Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Apr 3, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/0282
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas-selective permeable membrane (1) utilisable in a leak detector for a gas, more particularly helium, comprising a sheet-like body (11) on which at least one reduced thickness area (15) is defined by removing a material from the sheet-like body. This at least one reduced thickness area (15) being permeable to at least one gas and formed so as that it is partly surrounded by a thicker and substantially gas-impermeable area (16) ensuring the structural strength of the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.