Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2003-12-05
2008-09-02
Porta, David P. (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
07420171
ABSTRACT:
A gas sensor comprises a body on which is mounted an optical source and a detector means sensitive to light from the source. The body further comprises a channel arranged to admit gas, the channel comprising an elongated groove having reflective surfaces defining a folded optical path for light from the source. The groove is arranged as a serpentine shape or spiral shape so that light from the source to detector travels around the groove being internally reflected within the shape.
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Hayward Andrew Stephen
Hopkins Graham Paul
Wells Brian Thomas Alfred
E2V Technologies (UK) Limited
Kinberg Robert
Petaja Kyle D.
Porta David P.
Taningco Marcus H
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