The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 16, 2026

Filed:

May. 30, 2022
Applicant:

Wuhan United Imaging Healthcare Co., Ltd., Wuhan, CN;

Inventors:

Xiang Xu, Wuhan, CN;

Jiajia Tian, Shanghai, CN;

Qi Zhang, Wuhan, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/06 (2006.01); H01J 35/02 (2006.01); H01J 35/04 (2006.01); H01J 35/14 (2006.01); H05G 1/58 (2006.01);
U.S. Cl.
CPC ...
H01J 35/06 (2013.01); H01J 35/025 (2013.01); H01J 35/045 (2013.01); H05G 1/58 (2013.01); H01J 35/147 (2019.05);
Abstract

The present disclosure provides a cathode emission device. The cathode emission device may comprise a cathode assembly, including: a first filament, a second filament, and a grid electrode. The grid electrode may be operably connected to the first filament and surrounding the first filament and the second filament. The cathode assembly may be configured to be operably connected to a high-voltage generator and switchable between a first connection configuration and a second connection configuration.


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Xu, Xiang. (2026). Cathode emission device and x-ray tube using same (U.S. Patent No. 12658398). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12658398

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