Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2007-09-25
2009-11-10
Porta, David P (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
07615748
ABSTRACT:
A workpiece processing system includes a platen configured to support a workpiece, a source configured to provide an electromagnetic wave proximate a front surface of the workpiece, and a detector. The detector is configured to receive at least a portion of the electromagnetic wave and provide a detection signal representative of an outgassing rate from the workpiece of outgassing byproducts. A method of detecting an outgassing rate is also provided. The method includes providing an electromagnetic wave proximate a front surface of a workpiece, receiving at least a portion of the electromagnetic wave, and providing a detection signal representative of an outgassing rate from the workpiece of outgassing byproducts.
REFERENCES:
patent: 6323497 (2001-11-01), Walther
patent: 2002/0030801 (2002-03-01), Endo et al.
patent: 2002/0134934 (2002-09-01), Haney et al.
patent: 2003/0230732 (2003-12-01), Sasaki
patent: 2005/0260837 (2005-11-01), Walther
patent: 2006/0131514 (2006-06-01), Anc et al.
patent: 2004047893 (2004-02-01), None
Persing Harold M.
Walther Steven R.
Porta David P
Taningco Marcus H
Varian Semiconductor Equipment Associates Inc.
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