Electric heating – Heating devices – With heating unit structure
Reexamination Certificate
2005-09-27
2005-09-27
Evans, Robin O. (Department: 3742)
Electric heating
Heating devices
With heating unit structure
C219S444100, C219S544000
Reexamination Certificate
active
06949726
ABSTRACT:
A heating apparatus having an electrostatic adsorption function comprising at least a supporting substrate, an electrode for electrostatic adsorption and a heating layer formed on the supporting substrate, and an insulating layer formed so as to cover the electrode for electrostatic adsorption and the heating layer, wherein a surface roughness of the insulating layer satisfies Ra≦0.05 μm and Rmax≦0.6 μm, and Vickers hardness of the surface of the insulating layer is 10 GPa or less. Thus, there can be provided a heating apparatus having an electrostatic adsorption function in which scratches are not generated on a silicon wafer or the like and the generation of particles can be suppressed when heating/cooling the wafer or the like.
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Kurosawa Yukio
Kushihashi Takuma
Seki Masaki
Evans Robin O.
Oliff & Berridg,e PLC
Patel Vinod
Shin-Etsu Chemical Co. , Ltd.
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