Coupling Enhanced Oil Recovery with Energy Requirements for Crude Production and Processing
US-2020386212-A1 · Dec 10, 2020 · US
using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence)
using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence) · 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 | F03G7/04 |
| Official title | using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence) |
| Display label | using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence) |
| Total patents | 96 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 14 |
| 2017 | 20 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 7 |
| 2021 | 12 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Osmotic power generator
US-10801478-B2 · Oct 13, 2020 · US
Geothermal heat recovery device and geothermal heat recovery device operating method
US-10794160-B2 · Oct 6, 2020 · US
Multi-fluid, earth battery energy systems and methods
US-2020173692-A1 · Jun 4, 2020 · US
Method and apparatus for harvesting energy based on the random occurrence of common direction molecules
US-10655611-B2 · May 19, 2020 · US
Materials, devices, and methods for resonant ambient thermal energy harvesting using thermal diodes
US-2020028053-A1 · Jan 23, 2020 · US
Self-contained device for storing and releasing energy in order to power a piece of electrical equipment
US-10487809-B2 · Nov 26, 2019 · US
Geothermal turbine
US-2019345918-A1 · Nov 14, 2019 · US
Systems and methods of utilizing axial flow expanders
US-10385832-B2 · Aug 20, 2019 · US
Geothermal heat recovery device and geothermal heat recovery device operating method
US-2019234190-A1 · Aug 1, 2019 · US
Osmotic power generator
US-2019226463-A1 · Jul 25, 2019 · US
Wave energy isolation device and wave energy conversion equipment using the same
US-2019162161-A1 · May 30, 2019 · US
Electroosmotic pump and fluid-pumping system comprising the same
US-2019154011-A1 · May 23, 2019 · US
Combined power generation system using pressure difference
US-2019112977-A1 · Apr 18, 2019 · US
Materials, devices, and methods for resonant ambient thermal energy harvesting
US-2019063412-A1 · Feb 28, 2019 · US
Self-contained device for storing and releasing energy in order to power a piece of electrical equipment
US-2018363634-A1 · Dec 20, 2018 · US
Thermal pulse energy harvesting
US-10072638-B2 · Sep 11, 2018 · US
Cooling water supply system and binary cycle power plant including same
US-9879885-B2 · Jan 30, 2018 · US
Circulatory osmotic pressure electric power generation system and method, phase control method for working medium, and working medium for circulatory osmotic pressure electric power generation
US-9863405-B2 · Jan 9, 2018 · US
Method and apparatus for harvesting energy based on the random occurrence of common direction molecules
US-2017356428-A1 · Dec 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03G7/04?
- CPC F03G7/04 is the Cooperative Patent Classification code for “using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence).”
- How many patents are filed under CPC F03G7/04 (using pressure differences or thermal differences occurring in nature (F03G7/06 takes precedence))?
- Our database includes 96 publications tagged with this CPC code.
- Is patent activity under CPC F03G7/04 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).