Piston intended for a fluid machine and provided with a system for pressing seals, fluid machine comprising such a piston
US-2026092603-A1 · Apr 2, 2026 · US
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for wet gases, e.g. wet air
for wet gases, e.g. wet air · 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 | F04B37/20 |
| Official title | for wet gases, e.g. wet air |
| Display label | for wet gases, e.g. wet air |
| Total patents | 23 |
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 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Perforated structure
US-12361842-B2 · Jul 15, 2025 · US
Methods for evaluating vapor pump performance
US-12274973-B2 · Apr 15, 2025 · US
Compression device, installation, filling station and method using such a device
US-12180947-B2 · Dec 31, 2024 · US
Method for operating a vacuum pump and vacuum pump
US-2024302852-A1 · Sep 12, 2024 · US
Compression apparatus and filling station comprising such an apparatus
US-11965624-B2 · Apr 23, 2024 · US
Compression device, installation, filling station and method using such a device
US-2023067385-A1 · Mar 2, 2023 · US
Pneumatic pump silencer, pneumatic pump comprising such a silencer and coating product spraying installation comprising at least one such pneumatic pump
US-11572870-B2 · Feb 7, 2023 · US
Methods for evaluating vapor pump performance
US-2023020289-A1 · Jan 19, 2023 · US
Perforated structure
US-2022093007-A1 · Mar 24, 2022 · US
Compression apparatus and filling station comprising such an apparatus
US-2021332950-A1 · Oct 28, 2021 · US
Systems and methods for hydrate management
US-10815977-B2 · Oct 27, 2020 · US
Pneumatic pump silencer, pneumatic pump comprising such a silencer and coating product spraying installation comprising at least one such pneumatic pump
US-2020309108-A1 · Oct 1, 2020 · US
Air compressor system including a refrigerated dryer and a condensate harvester and water supply
US-10443898-B2 · Oct 15, 2019 · US
Reciprocating compressor and hydrogen supply system
US-10385836-B2 · Aug 20, 2019 · US
Air compressor system including a refrigerated dryer and a condensate harvester and water supply
US-2018119995-A1 · May 3, 2018 · US
Systems and methods for hydrate management
US-2017335833-A1 · Nov 23, 2017 · US
Compression machine with a body oscillating between two reversal points
US-9644619-B2 · May 9, 2017 · US
Reciprocating compressor and hydrogen supply system
US-2017016435-A1 · Jan 19, 2017 · US
Compressor and method for compressing technical gases
US-9447782-B2 · Sep 20, 2016 · US