Gas separation: apparatus – Apparatus for selective diffusion of gases
Reexamination Certificate
2006-11-28
2006-11-28
Greene, Jason M. (Department: 1724)
Gas separation: apparatus
Apparatus for selective diffusion of gases
C095S045000, C095S053000, C427S527000, C073S04050A
Reexamination Certificate
active
07141096
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.
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Carboneri Roberto
Vittozzi Sandro
Fishman Bella
Greene Jason M.
Varian S.p.A.
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