Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2007-07-03
2007-07-03
Glick, Edward J. (Department: 2882)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
C977S949000
Reexamination Certificate
active
10780714
ABSTRACT:
A carbon substance comprises a structure and line-shaped bodies, the structure having a size ranging from about 1 μm to about 100 μm and including carbon and a metal or a metallic oxide, and the line-shaped bodies having diameters smaller than about 200 nm and including carbon as a main component thereof and growing radially from a surface of the structure. A method for manufacturing the carbon substance uses a thermal decomposition of a source gas containing carbon in the vicinity of a catalyst, wherein the catalyst comprises a first and a second materials, the first material being Ni or a Ni oxide and the second material being In or an In oxide; and the thermal decomposition is performed at a temperature ranging from about 675° C. to about 750° C. An electron emission element uses the carbon substance as an electron emission material. A composite material includes the carbon substance in its matrix.
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Fujimura Youhei
Itoh Shigeo
Takikawa Hirofumi
Bacon & Thomas PLLC
Futaba Corporation
Glick Edward J.
Midkiff Anastasia
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