Motionless molten salt pump on leverage of pressure variation force
US-12546337-B2 · Feb 10, 2026 · US
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using both positively and negatively pressurised fluid medium, e.g. alternating
using both positively and negatively pressurised fluid medium, e.g. alternating · 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 | F04F1/02 |
| Official title | using both positively and negatively pressurised fluid medium, e.g. alternating |
| Display label | using both positively and negatively pressurised fluid medium, e.g. alternating |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Motionless Molten Salt Pump on Leverage of Pressure Variation Force
US-2025188955-A1 · Jun 12, 2025 · US
Pressure-controlling device, and pressure-using apparatus
US-11698066-B2 · Jul 11, 2023 · US
Method and Device for Compressing a Gas
US-2021301836-A1 · Sep 30, 2021 · US
Dense phase powder pump and corresponding operating method
US-10604360-B2 · Mar 31, 2020 · US
Pressure-controlling device, and pressure-using apparatus
US-2020088213-A1 · Mar 19, 2020 · US
Dense phase powder pump and corresponding operating method
US-2019023505-A1 · Jan 24, 2019 · US
Dense phase powder pump and corresponding operating method
US-10112787-B2 · Oct 30, 2018 · US
Powder supply by means of a dense flux pump for a coating system
US-9815074-B2 · Nov 14, 2017 · US
Powder conveyor and associated operating method
US-9745148-B2 · Aug 29, 2017 · US
Hydraulic circuit supply system
US-9599127-B2 · Mar 21, 2017 · US
Pressure balanced rotation spool valve
US-9512929-B2 · Dec 6, 2016 · US
Powder supply by means of a dense flux pump for a coating system
US-2016221013-A1 · Aug 4, 2016 · US
Hydraulic circuit supply system
US-2016169252-A9 · Jun 16, 2016 · US
Powder conveyor and associated operating method
US-2016122138-A1 · May 5, 2016 · US
Dense phase powder pump and corresponding operating method
US-2016052000-A1 · Feb 25, 2016 · US
Compression of a water-saturated medium
US-9162410-B2 · Oct 20, 2015 · US
Hydraulic circuit supply system
US-2015275925-A1 · Oct 1, 2015 · US
Method of conveying liquids
US-8940250-B2 · Jan 27, 2015 · US