Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Reexamination Certificate
2008-05-13
2011-11-01
Rogers, David A. (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
C073S29000R, C073S29000R, C073S30400R
Reexamination Certificate
active
08047073
ABSTRACT:
A capacitive liquid level detector for detecting a liquid level of a liquid in a receptacle, the liquid being conductive, the detector comprising: a capacitor with a first plate having a fixed size and being insulated from the liquid, and a second plate being formed by the liquid itself, its size being variable depending on the liquid level inside said receptacle, wherein a thin film dielectric layer is formed on the surface of the first plate and located between the first plate and the second plate, the first plate with the thin film dielectric layer formed on its surface is arranged such that it covers an open part of the outer wall of the receptacle, the first plate with the thin film dielectric layer formed on its surface is attached to the receptacle by sealing means in order to seal the receptacle against liquid leakage.
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KIPO Registration Determination Certificate dated Jun. 8, 2010, for priority Korean Patent application 10-2008-0042994.
Mergel Stefan
Zabel Andreas
Christie Parker & Hale LLP
Rogers David A.
Samsung SDI & Co., Ltd.
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