Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1993-07-02
1994-10-04
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2504922, G01N 1506
Patent
active
053529022
ABSTRACT:
In conducting a plurality of kinds of surface-treatments on objects to be treated, concentration of produced gases in exhaust gas discharged from a reaction vessel are detected, and data of the detected concentrations are compared with reference data stored in a control unit to continuously control and process the respective surface-treatments. As a result, processing control can be performed suitably for the respective kinds of surface-treatments, and different kinds of surface-treatments can be continuously conducted by one and the same surface-treatment device.
REFERENCES:
patent: 4902934 (1990-02-01), Miyamura et al.
patent: 4945774 (1990-08-01), Beard et al.
An English language abstract of Japanese Laid Open Patent Publication No. 5-47717 to Watanabe, listed above.
Le Que T.
Nelms David C.
Tokyo Electron Kabushiki Kaisha
Tokyo Electron Tohoku Kabushiki Kaisha
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