Radiant energy – Ion generation – Field ionization type
Reexamination Certificate
2011-02-15
2011-02-15
Berman, Jack I (Department: 2881)
Radiant energy
Ion generation
Field ionization type
C250S305000, C250S306000, C250S310000, C250S311000, C313S310000, C313S311000
Reexamination Certificate
active
07888654
ABSTRACT:
A stable cold field electron emitter is produced by forming a coating on an emitter base material. The coating protects the emitter from the adsorption of residual gases and from the impact of ions, so that the cold field emitter exhibits short term and long term stability at relatively high pressures and reasonable angular electron emission.
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Schwind Gregory A.
Swanson Lynwood W.
Tessner, II Theodore Carl
Berman Jack I
FEI Company
Griner David
Scheinberg Michael O.
Scheinberg & Griner LLP
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