Directed self-assembly of helices via electrodeposition on end-tethered nanomembrane ribbons for millimeter-wave traveling-wave tube amplifiers
US-2025317115-A1 · Oct 9, 2025 · US
using travelling-wave tubes
using travelling-wave tubes · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F3/58 |
| Official title | using travelling-wave tubes |
| Display label | using travelling-wave tubes |
| Total patents | 39 |
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 | 3 |
| 2016 | 7 |
| 2017 | 2 |
| 2018 | 3 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Travelling-Wave Tube, Electron Gun, and Power Amplification System
US-2025070736-A1 · Feb 27, 2025 · US
Methods of making a self-assembled slow-wave structures
US-12091746-B2 · Sep 17, 2024 · US
System and method for managing the operation of a travelling wave tube amplifier
US-2024186957-A1 · Jun 6, 2024 · US
Signal transmitter
US-11901923-B2 · Feb 13, 2024 · US
Biasing of travelling wave amplifiers
US-2024048110-A1 · Feb 8, 2024 · US
Traveling wave mixer
US-11742801-B2 · Aug 29, 2023 · US
Electronically-scanned antennas with distributed amplification
US-11710898-B1 · Jul 25, 2023 · US
Traveling wave mixer
US-2023140378-A1 · May 4, 2023 · US
Electroplated helical slow-wave structures for high-frequency signals
US-11588456-B2 · Feb 21, 2023 · US
Signal Transmitter
US-2022302937-A1 · Sep 22, 2022 · US
Super-linear power amplifiers with adaptive biasing
US-11444579-B2 · Sep 13, 2022 · US
Self-assembled helical slow-wave structures for high-frequency signals
US-2022044904-A1 · Feb 10, 2022 · US
Traveling wave tube amplifier having a helical slow-wave structure supported by a cylindrical scaffold
US-11201028-B2 · Dec 14, 2021 · US
Electroplated helical slow-wave structures for high-frequency signals
US-2021367573-A1 · Nov 25, 2021 · US
Impedance tuner and signal amplification device
US-11005452-B2 · May 11, 2021 · US
High-frequency module with connection interface
US-10992272-B2 · Apr 27, 2021 · US
Self-assembled helical slow-wave structures for high-frequency signals
US-2021099142-A1 · Apr 1, 2021 · US
Super-linear power amplifiers with adaptive biasing
US-2020373886-A1 · Nov 26, 2020 · US
Energy supply unit for a traveling wave tube
US-10778166-B2 · Sep 15, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F3/58?
- CPC H03F3/58 is the Cooperative Patent Classification code for “using travelling-wave tubes.”
- How many patents are filed under CPC H03F3/58 (using travelling-wave tubes)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC H03F3/58 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).