Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2006-06-06
2006-06-06
Patel, Ashok (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
C313S309000, C313S310000, C313S34600R, C315S364000, C348S805000
Reexamination Certificate
active
07057336
ABSTRACT:
An electron-emitting device comprises a pair of electrodes and an electroconductive film arranged between the electrodes and including an electron-emitting region carrying a graphite film. The graphite film shows, in a Raman spectroscopic analysis using a laser light source with a wavelength of 514.5 nm and a spot diameter of 1 μm, peaks of scattered light, of which 1) a peak (P2) located in the vicinity of 1,580 cm−1is greater than a peak (P1) located in the vicinity of 1,335 cm−1or 2) the half-width of a peak (P1) located in the vicinity of 1,335 cm−1is not greater than 150 cm−1.
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Hamamoto Yasuhiro
Ikeda Sotomitsu
Kishi Fumio
Miyazaki Kazuya
Ohnishi Toshikazu
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Patel Ashok
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