发明授权
- 专利标题: Thermionic emission cathode
- 专利标题(中): 热电子发射阴极
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申请号: US327467申请日: 1981-12-04
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公开(公告)号: US4482838A公开(公告)日: 1984-11-13
- 发明人: Masaji Ishii , Hirotoshi Hagiwara , Hideo Hiraoka
- 申请人: Masaji Ishii , Hirotoshi Hagiwara , Hideo Hiraoka
- 申请人地址: JPX Tokyo
- 专利权人: Denki Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人: Denki Kagaku Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX55-173415 19801209
- 主分类号: H01J37/06
- IPC分类号: H01J37/06 ; H01J1/14 ; H01J1/148 ; H01J1/16 ; H01J19/10
摘要:
A thermionic emission cathode of a single crystal made of the calcium hexaboride type crystaline structure comprises a top surrounded by natural face inherent to the axial direction of the single crystal.
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