Radio transmission device for the radio transmission of an interrogation signal based on a signal to be amplified
US-2022200836-A1 · Jun 23, 2022 · US
having trapezoidal shape
having trapezoidal shape · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03K4/94 |
| Official title | having trapezoidal shape |
| Display label | having trapezoidal shape |
| Total patents | 79 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 15 |
| 2020 | 10 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Circuit assembly and method for operating an LED module
US-11284488-B2 · Mar 22, 2022 · US
Waveform generation circuit for finely tunable sensing frequency
US-11159150-B2 · Oct 26, 2021 · US
Circuit for providing variable waveform excitation
US-11063579-B2 · Jul 13, 2021 · US
Circuit assembly and method for operating an led module
US-2021204376-A1 · Jul 1, 2021 · US
Liquid ejecting apparatus
US-10875294-B2 · Dec 29, 2020 · US
Circuit for providing variable waveform excitation
US-2020382010-A1 · Dec 3, 2020 · US
Waveform generation circuit for finely tunable sensing frequency
US-2020266805-A1 · Aug 20, 2020 · US
Waveform generation circuit for finely tunable sensing frequency
US-10686432-B2 · Jun 16, 2020 · US
Quadrature relaxation oscillator using frequency error compensation loop
US-10666236-B2 · May 26, 2020 · US
Response force generation device
US-10639674-B2 · May 5, 2020 · US
Power converter controller
US-10644595-B2 · May 5, 2020 · US
Capacitive logic cell
US-10593485-B2 · Mar 17, 2020 · US
Waveform generation circuit for finely tunable sensing frequency
US-2020067495-A1 · Feb 27, 2020 · US
Current generation architecture for an implantable medical device including controllable slew rate
US-10525253-B2 · Jan 7, 2020 · US
Amplifier circuit and ultrasonic probe
US-10448923-B2 · Oct 22, 2019 · US
Quadrature phase relaxation oscillator using frequency error compensation loop
US-2019319611-A1 · Oct 17, 2019 · US
Capacitive load driving circuit and image forming apparatus
US-2019283401-A1 · Sep 19, 2019 · US
Liquid ejecting apparatus
US-2019263114-A1 · Aug 29, 2019 · US
Image pickup device and electronic apparatus
US-10389963-B2 · Aug 20, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03K4/94?
- CPC H03K4/94 is the Cooperative Patent Classification code for “having trapezoidal shape.”
- How many patents are filed under CPC H03K4/94 (having trapezoidal shape)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC H03K4/94 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).