| 发明名称 |
Method of treating electron emissive cathodes |
| 摘要 |
Firing electron emissive compounds of barium tantalate in excess of 1600 DEG C in controlled vacuum conditions removes elemental barium from the compound. The method provides improved fluorescent lamp quality by yielding substantially less end discoloration over the life of the lamps.
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| 申请公布号 |
US3969279(A) |
申请公布日期 |
1976.07.13 |
| 申请号 |
US19740497026 |
申请日期 |
1974.08.13 |
| 申请人 |
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION |
发明人 |
KERN, EDMUND R. |
| 分类号 |
H01J9/44;(IPC1-7):H01B1/08 |
主分类号 |
H01J9/44 |
| 代理机构 |
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| 地址 |
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