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This invention describes a filter system for sensitive manufacturing processes, like making computer chips, that helps detect unwanted basic chemicals such as amines. It uses two filter elements with adsorbing material, and a sampling point located between them to connect to an external amine sensor. This setup allows for monitoring the gas quality after an initial filtering stage.
Why it matters: Semiconductor fabrication processes have become significantly more sensitive to trace contaminants since 2004, increasing the need for precise, real-time gas monitoring. Advances in sensor integration and process control systems (G03F7/70525) could make this sampling strategy more valuable for predictive maintenance.
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