Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2005-01-04
2005-01-04
Font, Frank G. (Department: 2883)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S42300F
Reexamination Certificate
active
06838664
ABSTRACT:
An ion source using a corona discharge for ionizing a sample at high efficient is provided. In the corona discharge generated at a tip end of a needle electrode by application of high voltage thereto, the direction in which the sample is introduced to the region of corona discharge and the direction in which ions are drawn out of the corona discharge region are substantially opposed to each other to improve the efficiency of ionization and to maintain a stable discharge for a long period of time.
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Hashimoto Yuichiro
Kojima Kyoko
Sakairi Minoru
Suga Masao
Yamada Masuyoshi
Antonelli Terry Stout & Kraus LLP
Font Frank G.
Hitachi , Ltd.
Kalivoda Christopher M.
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