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.
Patent No.:
Date of Patent:
Sep. 22, 2026
Filed:
Jan. 11, 2023
Hamamatsu Photonics K.k., Hamamatsu, JP;
Hiroki Furuki, Hamamatsu, JP;
Atsushi Ishii, Hamamatsu, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
Abstract
An X-ray tube includes a housing; an electron gun that emits an electron beam inside the housing; and a target that generates an X-ray upon the electron beam being incident on the target inside the housing. The electron gun includes a cathode that releases electrons, and a focusing electrode that focuses the electrons onto the target as the electron beam. The focusing electrode has a tubular shape having an inner surface and an outer surface. The inner surface includes a first region, and a second region located on a target side with respect to the first region. An average roughness of the second region is smaller than an average roughness of the first region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile