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. 13, 1996
Filed:
Apr. 28, 1994
Hiroyuki Kyushima, Hamamatsu, JP;
Koji Nagura, Hamamatsu, JP;
Yutaka Hasegawa, Hamamatsu, JP;
Eiichiro Kawano, Hamamatsu, JP;
Tomihiko Kuroyanagi, Hamamatsu, JP;
Akira Atsumi, Hamamatsu, JP;
Masuya Mizuide, Hamamatsu, JP;
Hamamatsu Photonics, K.K., Hamamatsu, JP;
Abstract
A photomultiplier which can be easily made compact has a dynode unit having a plurality of dynode plates stacked in an electron incident direction in a vacuum container fabricated by a housing and a base member integrally formed with the housing. Each dynode plate is constituted by welding at least two plates overlapping each other. The welding positions do not overlap each other in the stacking direction of the dynode plates. With this structure, field discharge at the welding portions between the dynode plates can be prevented to reduce noise.