Thermoacoustic device with diaphragm structure
US-11320176-B2 · May 3, 2022 · US
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Hot gas positive-displacement engine plants
Hot gas positive-displacement engine plants · 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 | F02G1/00 |
| Official title | Hot gas positive-displacement engine plants |
| Display label | Hot gas positive-displacement engine plants |
| Total patents | 4 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2020 | 2 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermoacoustic device
US-2020355408-A1 · Nov 12, 2020 · US
Rotating machine having magnetically actuated pistons
US-10658915-B2 · May 19, 2020 · US
Rotating machine having magnetically actuated pistons
US-2018358881-A1 · Dec 13, 2018 · US