Liquid crystal phase shifter having a first electrode with metal patches and a second electrode that is one-piece
US-11843151-B2 · Dec 12, 2023 · US
using ferroelectric devices
using ferroelectric devices · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01P1/181 |
| Official title | {using ferroelectric devices} |
| Display label | using ferroelectric devices |
| Total patents | 106 |
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 | 4 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 10 |
| 2022 | 14 |
| 2023 | 19 |
| 2024 | 20 |
| 2025 | 12 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electronic device and method for forming the same
US-2023387562-A1 · Nov 30, 2023 · US
Phase shifter, driving method therefor, and antenna
US-2023352804-A1 · Nov 2, 2023 · US
Phase shifter and antenna
US-11721898-B2 · Aug 8, 2023 · US
Phase-shift unit, phase shifter and antenna
US-11698564-B2 · Jul 11, 2023 · US
Dually Electrically Tunable 3-D Compact RF Phase Shifter
US-2023207998-A1 · Jun 29, 2023 · US
Liquid crystal phase shifter having a delay line with line spacing and/or line width that provides a specified cell thickness and an antenna formed therefrom
US-11646488-B2 · May 9, 2023 · US
Liquid crystal phase shifter having a delay line with a plurality of bias lines on two sides thereof and an antenna formed therefrom
US-11646489-B2 · May 9, 2023 · US
Liquid crystal phase shifter, method for operating the same, liquid crystal antenna, and communication apparatus
US-2023079873-A1 · Mar 16, 2023 · US
Dually electrically tunable 3-D compact RF phase shifter
US-11594797-B2 · Feb 28, 2023 · US
Phase shifter, manufacture method and drive method therefor, and electronic device
US-2022399625-A1 · Dec 15, 2022 · US
Phase shifter and antenna
US-2022344808-A1 · Oct 27, 2022 · US
Phase shifter, fabrication method thereof, and antenna
US-2022320731-A1 · Oct 6, 2022 · US
Phase shift compensation device for detecting and adjusting an actual dielectric constant in a liquid crystal phase shifter
US-11387530-B2 · Jul 12, 2022 · US
Phase-shift unit, phase shifter and antenna
US-2022158347-A1 · May 19, 2022 · US
Phase shifter and manufacturing method thereof, and antenna
US-2022140457-A1 · May 5, 2022 · US
Phase shifter and manufacturing method thereof, and antenna
US-2022140461-A1 · May 5, 2022 · US
Phase shifter and antenna device
US-2022140460-A1 · May 5, 2022 · US
Phase-shift unit, phase shifter and antenna
US-11276929-B2 · Mar 15, 2022 · US
Liquid crystal phase shifter comprising a liquid crystal cell with first and second substrates separated by a partition plate having first and second microstrips on opposing surfaces of the plate
US-11264684-B2 · Mar 1, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01P1/181?
- CPC H01P1/181 is the Cooperative Patent Classification code for “using ferroelectric devices.”
- How many patents are filed under CPC H01P1/181 (using ferroelectric devices)?
- Our database includes 106 publications tagged with this CPC code.
- Is patent activity under CPC H01P1/181 growing?
- Publication counts under this code: 20 in 2024 vs 12 in 2025 (latest complete years).