Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through immobilized liquid
Reexamination Certificate
2005-05-10
2005-05-10
Lawrence, Frank M. (Department: 1724)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through immobilized liquid
C095S214000, C096S005000, C096S101000, C096S413000, C073S031070
Reexamination Certificate
active
06890372
ABSTRACT:
A denuder assembly is adapted for the collection and removal of a gaseous analyte from a sample gas. The denuder includes a housing including an internal cavity, a sample gas inlet fluidly coupled with a sample gas source, a denuder liquid inlet fluidly coupled with a denuder liquid source, a barrier sheet extending across the internal cavity and separating the internal cavity into a liquid reservoir and a gas flow-through channel fluidly coupled with and downstream of the sample gas inlet, and a denuder liquid disposed in the liquid reservoir and permeating the barrier sheet to coat the gas-channel surface of the barrier sheet thereby allowing the denuder liquid on the gas-channel surface to contact the sample gas flowing within the gas flow-through channel and allowing the analyte to diffuse through the barrier sheet into the liquid reservoir.
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Dasgupta Purnendu K.
Li Jianzhong
Morris Kavin J.
Brezner David J.
Dionex Corporation
Dorsey & Whitney LLP
Johnson Victor E.
Lawrence Frank M.
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