X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2011-07-05
2011-07-05
Kao, Chih-Cheng G (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S111000, C378S134000
Reexamination Certificate
active
07974383
ABSTRACT:
An x-ray tube includes a frame, an anode for generating x-rays disposed within the frame, a cathode disposed within the frame, where the cathode is configured to selectively emit an electron beam toward the anode, and at least one heating element disposed within the frame and configured to heat a portion of the anode.
REFERENCES:
patent: 3567939 (1971-03-01), Schadler et al.
patent: 3694685 (1972-09-01), Houston
patent: 4631742 (1986-12-01), Oliver
patent: 4853946 (1989-08-01), Elliott et al.
patent: 7120222 (2006-10-01), Hoffman
patent: 2006/0193438 (2006-08-01), Radley et al.
General Electric Company
Kao Chih-Cheng G
Ziolkowski Patent Solutions Group, SC
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