Patent ID: 11949202
Assignee: CYMER, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC H  B  Y | IPC B  H

Claim 20:
21. A method of gas management, the method comprising:
measuring an amount of at least one intended gas component in a purified gas mixture;
measuring an amount of at least one impurity gas component in the purified gas mixture;
determining whether a measured amount of at least one intended gas component is within a first range of acceptable values;
determining whether a measured amount of at least one impurity gas component is within a second range of acceptable values;
if the measured amount of the at least one intended gas component is not within the first range of acceptable values, causing a gas blending system to add an additional gas component to the purified gas mixture to prepare a recycled gas mixture; and
if the measured amount of the at least one impurity gas is not within the second range of acceptable values, generating an error signal.