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:
Feb. 07, 2012
Filed:
Feb. 08, 2007
Applicant:
Tatsuya Matsumura, Hamamatsu, JP;
Inventor:
Tatsuya Matsumura, Hamamatsu, JP;
Assignee:
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electron beam generating apparatus () includes an electron gun (), a vacuum container (), a frame material (), and a window material (). The electron gun () has a filament () from which an electron beam (EB) is emitted. The vacuum container () holds the filament (). The frame material () has an electron passing hole () through which the electron beam (EB) passes, and is detachably attached to the vacuum container (). The window material () is bonded (brazed) to the frame material () so as to airtightly stop up the electron passing hole (), and allows the electron beam (EB) to penetrate therethrough.