Compressor frequency regulation method, control apparatus, heat exchange device and electronic device
US-12435915-B2 · Oct 7, 2025 · US
by encapsulation
by encapsulation · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04B53/002 |
| Official title | {by encapsulation} |
| Display label | by encapsulation |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pump noise attenuator and method thereof
US-12338812-B2 · Jun 24, 2025 · US
Case, compressor and vehicle
US-2025135846-A1 · May 1, 2025 · US
Fracturing equipment
US-12281648-B2 · Apr 22, 2025 · US
Fracturing apparatus
US-12247472-B2 · Mar 11, 2025 · US
Hydraulic pump system
US-12180948-B2 · Dec 31, 2024 · US
A Booster Unit and a Reverse Osmosis Filtration System
US-2024367110-A1 · Nov 7, 2024 · US
Noise mitigation of subsea oil and gas equipment using subsea acoustic insulation
US-12049799-B2 · Jul 30, 2024 · US
Fracturing apparatus
US-2024093585-A1 · Mar 21, 2024 · US
Air pump device and seat apparatus
US-11932152-B2 · Mar 19, 2024 · US
Fracturing apparatus
US-11859481-B2 · Jan 2, 2024 · US
Compressor Frequency Regulation Method, Control Apparatus, Heat Exchange Device and Electronic Device
US-2023417466-A1 · Dec 28, 2023 · US
Modular suction stabilizer
US-2023304484-A1 · Sep 28, 2023 · US
Outdoor unit of air-conditioning apparatus
US-11761676-B2 · Sep 19, 2023 · US
Noise mitigation of subsea oil and gas equipment using subsea acoustic insulation
US-2023184047-A1 · Jun 15, 2023 · US
Fracturing apparatus
US-2023120810-A1 · Apr 20, 2023 · US
Fracturing equipment
US-11592020-B2 · Feb 28, 2023 · US
Pump noise attenuator and method thereof
US-2022381238-A1 · Dec 1, 2022 · US
Air pump device and seat apparatus
US-2022379789-A1 · Dec 1, 2022 · US
Package-type compressor
US-11473582-B2 · Oct 18, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B53/002?
- CPC F04B53/002 is the Cooperative Patent Classification code for “by encapsulation.”
- How many patents are filed under CPC F04B53/002 (by encapsulation)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F04B53/002 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).