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:
Oct. 02, 2012
Filed:
May. 21, 2008
Ryozo Takeuchi, Hitachi, JP;
Hiroshi Morita, Mito, JP;
Yoshitaka Seki, Mobara, JP;
Yoshiaki Tsumuraya, Mobara, JP;
Ryozo Takeuchi, Hitachi, JP;
Hiroshi Morita, Mito, JP;
Yoshitaka Seki, Mobara, JP;
Yoshiaki Tsumuraya, Mobara, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
The present invention provides an X-ray tube that improves and stabilizes a withstanding voltage performance and thus ensures the reliability of a product. The present invention is an X-ray tube comprising a cathode for emitting electrons, an anode for emitting an X-ray which an irradiation of the electrons emitted from the cathode causes, and a glass tube for confining the cathode and the anode in a vacuum, wherein an inside surface of the glass tube is covered with a glass thin film having a melting point lower than that of a glass of the glass tube and particles adhered to the glass tube by the glass thin film.