A thermoacoustic engine driven by irradiation of an absorbing media or oscillating heating
US-2025382947-A1 · Dec 18, 2025 · US
using the energy of vibration of fluid columns
using the energy of vibration of fluid columns · 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 | F03G7/002 |
| Official title | {using the energy of vibration of fluid columns} |
| Display label | using the energy of vibration of fluid columns |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 7 |
| 2017 | 13 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat sound converter
US-2025029593-A1 · Jan 23, 2025 · US
Thermoacoustic converter
US-2025012261-A1 · Jan 9, 2025 · US
Heat-assisted pumping systems for use in negative pressure wound therapy
US-12186166-B2 · Jan 7, 2025 · US
Cool air/warm air generation system
US-11511596-B2 · Nov 29, 2022 · US
Thermal management system
US-11371431-B1 · Jun 28, 2022 · US
Thermoacoustic device with diaphragm structure
US-11320176-B2 · May 3, 2022 · US
Heat-assisted pumping systems for use in negative pressure wound therapy
US-2022000672-A1 · Jan 6, 2022 · US
Heat-assisted pumping systems for use in negative pressure wound therapy
US-11071653-B2 · Jul 27, 2021 · US
Thermoacoustic device
US-2021204072-A1 · Jul 1, 2021 · US
Thermoacoustic device
US-2020355408-A1 · Nov 12, 2020 · US
Energy conversion device
US-10767538-B2 · Sep 8, 2020 · US
Method and apparatus for harvesting energy based on the random occurrence of common direction molecules
US-2020277939-A1 · Sep 3, 2020 · US
System and method for energy conversion
US-10683852-B2 · Jun 16, 2020 · US
Method and apparatus for harvesting energy based on the random occurrence of common direction molecules
US-10655611-B2 · May 19, 2020 · US
Thermoacoustic energy converting element part, thermoacoustic energy converter, and method of manufacturing thermoacoustic energy converting element part
US-10495072-B2 · Dec 3, 2019 · US
Thermoacoustic energy converting element part and thermoacoustic energy converter
US-10480832-B2 · Nov 19, 2019 · US
Cool air/warm air generation system
US-2019329625-A1 · Oct 31, 2019 · US
Energy conversion device
US-2019226381-A1 · Jul 25, 2019 · US
Alpha-stream convertor
US-10309376-B1 · Jun 4, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03G7/002?
- CPC F03G7/002 is the Cooperative Patent Classification code for “using the energy of vibration of fluid columns.”
- How many patents are filed under CPC F03G7/002 (using the energy of vibration of fluid columns)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC F03G7/002 growing?
- Publication counts under this code: 4 in 2022 vs 4 in 2025 (latest complete years).