Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Process control in response to analysis
Reexamination Certificate
2006-04-11
2006-04-11
Jastrzab, Krisanne (Department: 1744)
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Process control in response to analysis
C096S146000, C126S208000, C422S004000, C422S120000, C422S122000, C423S351000
Reexamination Certificate
active
07025931
ABSTRACT:
The present invention reduces the amount of oxygen in an oxygen-containing gas within a closed environment. A selected amount of hydrogen gas is mixed with a portion of the oxygen-containing gas from the closed environment to form a first gas mixture. A catalyst exposed to the first gas mixture causes a reaction between the hydrogen and at least a portion of the oxygen therein. The resulting second gas mixture, which is returned to the closed environment, has a lower percentage of oxygen. At least one oxygen sensor is positioned in the closed environment to determine when oxygen levels in the closed environment reach a threshold level. The output signal from the sensor is used to control when and/or how much hydrogen is mixed in the first gas mixture.
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patent: 6463925 (2002-10-01), Nuckols et al.
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patent: 6528403 (2003-03-01), Tanabe et al.
patent: 6551474 (2003-04-01), Andrews et al.
Nuckols Marshall L.
Vanzandt Kirk
Jastrzab Krisanne
Shepherd James T.
The United States of America as represented by the Secretary of
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