Apparatus for generating electron radiation and three-dimensional printing apparatus
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United States of America Patent
Stats
-
May 4, 2021
Grant Date -
Jan 14, 2021
app pub date -
Sep 19, 2019
filing date -
Jul 10, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for generating electron radiation comprises: an elongated, wire-shaped hot cathode to emit electron radiation having an elongated, line-shaped cross section perpendicular to a direction of propagation of the electron radiation; a cathode electrode; an anode electrode with an opening through which the electron radiation emitted from the hot cathode can pass, wherein a voltage applied between the cathode electrode and the anode electrode accelerates electrons emitted from the hot cathode; and a deflecting unit to deflect the electron radiation downstream of the opening of the anode electrode, wherein a cross section of the electron radiation perpendicular to the direction of propagation is changed by the deflecting unit to decease a longitudinal extent of the electron radiation and to increase a transverse extent of the electron radiation such that longitudinal and transverse extents of the electron radiation perpendicular to the direction of propagation are about the same size.
First Claim
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International Classification(s)
- 2019 Application Filing Year
- H01J Class
- 2606 Applications Filed
- 1833 Patents Issued To-Date
- 70.34 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01J Class
- 0 % this patent is cited more than
- 4 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 4, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 4, 2032 |
