Cooling of a drive system for diaphragm pumps
US-12263335-B2 · Apr 1, 2025 · US
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Machines or pumps with differential-surface pistons
Machines or pumps with differential-surface pistons · 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 | F04B5/00 |
| Official title | Machines or pumps with differential-surface pistons |
| Display label | Machines or pumps with differential-surface pistons |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Intensity modifiable intensifier pump
US-11353017-B2 · Jun 7, 2022 · US
Cooling of a Drive System for Diaphragm Pumps
US-2022126084-A1 · Apr 28, 2022 · US
Displacement pump
US-2021394524-A1 · Dec 23, 2021 · US
Intensity modifiable intensifier pump
US-2020340461-A1 · Oct 29, 2020 · US
Compression device having connection unit for cooling unit
US-10677235-B2 · Jun 9, 2020 · US
Piston pump having a stepped piston
US-10385833-B2 · Aug 20, 2019 · US
Fluid pressure producing method and fluid pressure producing device
US-10352309-B2 · Jul 16, 2019 · US
Piston pump
US-10036369-B2 · Jul 31, 2018 · US
Pump Device, Brake System
US-2018149151-A1 · May 31, 2018 · US
Piston Pump
US-2017291586-A1 · Oct 12, 2017 · US
Double acting refrigeration compressor
US-9777717-B2 · Oct 3, 2017 · US
Double-acting refrigeration compressor
US-2017211557-A1 · Jul 27, 2017 · US
Fluid pressure producing method and fluid pressure producing device
US-2017089328-A1 · Mar 30, 2017 · US
Hydraulically controlled reciprocating pump system
US-9366248-B2 · Jun 14, 2016 · US
Piston Pump
US-2016108900-A1 · Apr 21, 2016 · US
Multi-chamber pump apparatus, systems, and methods
US-2015086386-A1 · Mar 26, 2015 · US
Compression apparatus
US-2015059569-A1 · Mar 5, 2015 · US