Thermionic tungsten/scandate cathodes and method of making the same
US-11075049-B2 · Jul 27, 2021 · US
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Dispenser-type cathodes, e.g. L-cathode
Dispenser-type cathodes, e.g. L-cathode · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01J1/28 |
| Official title | Dispenser-type cathodes, e.g. L-cathode |
| Display label | Dispenser-type cathodes, e.g. L-cathode |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low work function electron beam filament assembly
US-10796876-B2 · Oct 6, 2020 · US
Method for preparing pressed scandia-doped dispenser cathodes using microwave sintering
US-10651000-B2 · May 12, 2020 · US
Focusing electrode for cathode arrangement, electron gun, and lithography system comprising such electron gun
US-10622188-B2 · Apr 14, 2020 · US
Thermionic Tungsten/Scandate Cathodes and Method of Making The Same
US-2020043691-A1 · Feb 6, 2020 · US
Thermionic tungsten/scandate cathodes and methods of making the same
US-10497530-B2 · Dec 3, 2019 · US
Air-stable alkali or alkaline-earth metal dispensers
US-10109446-B2 · Oct 23, 2018 · US
Low work function electron beam filament assembly
US-2018269024-A1 · Sep 20, 2018 · US
Target for barium-scandate dispenser cathode
US-2018158639-A1 · Jun 7, 2018 · US
Method for preparing pressed scandia-doped dispenser cathodes using microwave sintering
US-2017345608-A1 · Nov 30, 2017 · US
Carburized lutetium oxide doped molybdenum cathode and its fabrication method
US-9646796-B1 · May 9, 2017 · US
Focusing electrode for cathode arrangement, electron gun, and lithography system comprising such electron gun
US-2016314935-A1 · Oct 27, 2016 · US
Thermionic Tungsten/Scandate Cathodes and Methods of Making the Same
US-2016300684-A1 · Oct 13, 2016 · US
Cathode arrangement, electron gun, and lithography system comprising such electron gun
US-9466453-B2 · Oct 11, 2016 · US
Cathode arrangement, electron gun, and lithography system comprising such electron gun
US-9455112-B2 · Sep 27, 2016 · US
Cathode arrangement, electron gun, and lithography system comprising such electron gun
US-2015187533-A1 · Jul 2, 2015 · US
Cathode arrangement, electron gun, and lithography system comprising such electron gun
US-2015187541-A1 · Jul 2, 2015 · US