Additive manufacturing of an ion optical device
US-2025112014-A1 · Apr 3, 2025 · US
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characterised by the material
characterised by the material · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01J1/48 |
| Official title | characterised by the material |
| Display label | characterised by the material |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Field emission cathode structure for a field emission arrangement
US-10734180-B2 · Aug 4, 2020 · US
A field emission cathode structure for a field emission arrangement
US-2020161071-A1 · May 21, 2020 · US
Two-dimensional graphene cold cathode, anode, and grid
US-10186394-B2 · Jan 22, 2019 · US
Two-Dimensional Graphene Cold Cathode, Anode, and Grid
US-2018294131-A1 · Oct 11, 2018 · US
Applications of graphene grids in vacuum electronics
US-10056219-B2 · Aug 21, 2018 · US
Fabrication of nanoscale vacuum grid and electrode structure with high aspect ratio dielectric spacers between the grid and electrode
US-10026822-B2 · Jul 17, 2018 · US
Two-Dimensional Graphene Cold Cathode, Anode, and Grid
US-2017323754-A1 · Nov 9, 2017 · US
Applications of Graphene Grids in Vacuum Electronics
US-2017323755-A1 · Nov 9, 2017 · US
Two-dimensional graphene cold cathode, anode, and grid
US-9805900-B1 · Oct 31, 2017 · US
Electronic device multi-layer graphene grid
US-9659734-B2 · May 23, 2017 · US
Applications of graphene grids in vacuum electronics
US-9659735-B2 · May 23, 2017 · US
Field emission device with nanotube or nanowire grid
US-9627168-B2 · Apr 18, 2017 · US
Performance optimization of a field emission device
US-9384933-B2 · Jul 5, 2016 · US
Fabrication of Nanoscale Vacuum Grid and Electrode Structure With High Aspect Ratio Dielectric Spacers Between the Grid and Electrode
US-2016141382-A1 · May 19, 2016 · US
Applications of graphene grids in vacuum electronics
US-2015243468-A1 · Aug 27, 2015 · US
Electronic device multi-layer graphene grid
US-2015213992-A1 · Jul 30, 2015 · US
Performance optimization of a field emission device
US-2015179389-A1 · Jun 25, 2015 · US
Field emission device with nanotube or nanowire grid
US-2015179386-A1 · Jun 25, 2015 · US
Performance optimization of a field emission device
US-9018861-B2 · Apr 28, 2015 · US