Cylinder in particular for hydrogen tank cycling facility
US-12546296-B2 · Feb 10, 2026 · US
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the pumping members not being mechanically connected to each other
the pumping members not being mechanically connected to each other · 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 | F04B9/117 |
| Official title | the pumping members not being mechanically connected to each other |
| Display label | the pumping members not being mechanically connected to each other |
| 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 | 4 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 3 |
| 2020 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cryogenic pump for hydrogen fueling station
US-2025320862-A1 · Oct 16, 2025 · US
Pump system
US-2025067155-A1 · Feb 27, 2025 · US
Hydraulic drive system for a construction and/or thick matter pump system, construction and/ or thick matter pump system, and method for operating a hydraulic drive system and/or a construction and/or thick matter pump system
US-12203490-B1 · Jan 21, 2025 · US
Hydraulic Drive System for a Construction and/or Thick Matter Pump System, Construction and/or Thick Matter Pump System, and Method for Operating a Hydraulic Drive System and/or a Construction and/or Thick Matter Pump System
US-2025012298-A1 · Jan 9, 2025 · US
Cylinder in particular for hydrogen tank cycling facility
US-2024328439-A1 · Oct 3, 2024 · US
Linear frac pump assembly
US-2023160375-A1 · May 25, 2023 · US
Method for Operating a High-Density Solids Pump and High-Density Solids Pump
US-2023026231-A1 · Jan 26, 2023 · US
Pressure-maintaining valve arrangement for a purge circuit of a closed hydraulic circuit
US-10539130-B2 · Jan 21, 2020 · US
Dual-stage cryogenic pump
US-9970421-B2 · May 15, 2018 · US
Coolant supply unit, cooling unit, and electronic device
US-9924614-B2 · Mar 20, 2018 · US
Deviation tolerant well plunger pump
US-9915257-B2 · Mar 13, 2018 · US
Pressure-Maintaining Valve Arrangement for a Purge Circuit of a Closed Hydraulic Circuit
US-2017306946-A1 · Oct 26, 2017 · US
Coolant supply unit, cooling unit, and electronic device
US-2017150648-A1 · May 25, 2017 · US
Coolant supply unit, cooling unit, and electronic device
US-9603285-B2 · Mar 21, 2017 · US
Fluid transfer device, ship including the same, and fluid for use in transfer device
US-9592891-B2 · Mar 14, 2017 · US
Hydraulic machine, in particular hydraulic pressure exchanger
US-9556736-B2 · Jan 31, 2017 · US
Pump arrangement with two pump units, system, use and method
US-9458843-B2 · Oct 4, 2016 · US
Dual-stage cryogenic pump
US-2016281690-A1 · Sep 29, 2016 · US
Multistage piston compressor
US-9109587-B2 · Aug 18, 2015 · US