Invention Grant
- Patent Title: Cathode
- Patent Title (中): 阴极
-
Application No.: US12557706Application Date: 2009-09-11
-
Publication No.: US08294350B2Publication Date: 2012-10-23
- Inventor: Joerg Freudenberger , Wolfgang Kutschera , Gunter Roehrich , Karin Soeldner
- Applicant: Joerg Freudenberger , Wolfgang Kutschera , Gunter Roehrich , Karin Soeldner
- Applicant Address: DE Munich
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agency: Schiff Hardin LLP
- Priority: DE102008046721 20080911
- Main IPC: H01J1/15
- IPC: H01J1/15
Abstract:
A cathode HAS a cathode head in which a surface emitter is arranged that emits electrons upon application of a heating voltage. The surface emitter is fashioned as a parallel surface emitter with at least two emitter surfaces spaced apart from one another, to which at least one electrically conductive cutoff electrode is fed that is galvanically separated from the parallel surface emitter. Such a cathode has a good cutoff capability.
Public/Granted literature
- US20100067663A1 CATHODE Public/Granted day:2010-03-18
Information query
