Systems and methods for tunable parametric amplification
US-2025038722-A1 · Jan 30, 2025 · US
using variable-capacitance element; using variable-permittivity element
using variable-capacitance element; using variable-permittivity element · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F7/04 |
| Official title | using variable-capacitance element; using variable-permittivity element |
| Display label | using variable-capacitance element; using variable-permittivity element |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 9 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Chip preparation method and system, and chip
US-2024334843-A1 · Oct 3, 2024 · US
Frequency dependent dynamic range control
US-11889279-B2 · Jan 30, 2024 · US
Parametric amplifier having a quantum capacitance device
US-11824505-B2 · Nov 21, 2023 · US
Parametric amplifier
US-11791788-B2 · Oct 17, 2023 · US
Frequency dependent dynamic range control
US-2023188890-A1 · Jun 15, 2023 · US
Optimally detuned parametric amplification, and associated devices
US-11671063-B2 · Jun 6, 2023 · US
Optimally detuned parametric amplification, and associated devices
US-2023020178-A1 · Jan 19, 2023 · US
Josephson traveling wave parametric amplifier
US-11515851-B2 · Nov 29, 2022 · US
Parametric amplifier having a quantum capacitance device
US-2022182027-A1 · Jun 9, 2022 · US
Josephson traveling wave parametric amplifier
US-2022094320-A1 · Mar 24, 2022 · US
Squid-based traveling wave parametric amplifier
US-11277107-B2 · Mar 15, 2022 · US
A parametric amplifier
US-2021135643-A1 · May 6, 2021 · US
Squid-based traveling wave parametric amplifier
US-2020162047-A1 · May 21, 2020 · US
Low-noise josephson junction-based directional amplifier
US-10541659-B2 · Jan 21, 2020 · US
Squid-based traveling wave parametric amplifier
US-10516375-B2 · Dec 24, 2019 · US
Variable gain amplifier
US-10447220-B2 · Oct 15, 2019 · US
Variable gain amplifier
US-2019280661-A1 · Sep 12, 2019 · US
Techniques for producing quantum amplifiers and related systems and methods
US-10404214-B2 · Sep 3, 2019 · US
Selective amplification of frequency multiplexed microwave signals using cascading multi-path interferometric Josephson directional amplifiers with nonoverlapping bandwidths
US-10396731-B2 · Aug 27, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F7/04?
- CPC H03F7/04 is the Cooperative Patent Classification code for “using variable-capacitance element; using variable-permittivity element.”
- How many patents are filed under CPC H03F7/04 (using variable-capacitance element; using variable-permittivity element)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC H03F7/04 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).