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:
Dec. 26, 1978
Filed:
Mar. 09, 1977
Applicant:
Inventor:
Hiroshi Washida, Kawasaki, JP;
Assignee:
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ; B32B / ;
U.S. Cl.
CPC ...
313377 ; 313399 ; 428323 ; 428320 ;
Abstract
A secondary electron multiplication target for a secondary electron conduction type which comprises a conductive support layer and a secondary electron emitting layer deposited on the support layer. This secondary electron emitting layer is a porous layer consisting of fine particles of a humidity proof substance having higher melting point and electric resistance than MgO, for example, MgF.sub.2. This porous layer consists mainly of primary particles each having an average particle size of scores of angstroms to five hundred angstroms.