Multi-stage stirling cycle machine and a steady-state operating parameter control method therefor
US-11795890-B2 · Oct 24, 2023 · US
of closed-cycle type
of closed-cycle type · 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 | F02G1/04 |
| Official title | of closed-cycle type |
| Display label | of closed-cycle type |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 12 |
| 2021 | 8 |
| 2022 | 8 |
| 2023 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Constant density heat exchanger and system for energy conversion
US-2023228229-A1 · Jul 20, 2023 · US
A Multi-Stage Stirling Cycle Machine And A Steady-State Operating Parameter Control Method Therefor
US-2023193851-A1 · Jun 22, 2023 · US
Energy conversion apparatus
US-11629663-B2 · Apr 18, 2023 · US
Constant density heat exchanger and system for energy conversion
US-11608795-B2 · Mar 21, 2023 · US
Energy conversion apparatus
US-2023019495-A1 · Jan 19, 2023 · US
Monolithic heat-exchanger bodies
US-2022290630-A1 · Sep 15, 2022 · US
Engine apparatus and method for operation
US-2022195959-A1 · Jun 23, 2022 · US
Monolithic heat-exchanger bodies
US-11346302-B2 · May 31, 2022 · US
Exhaust gas heat recovery system and exhaust system
US-11326498-B2 · May 10, 2022 · US
Gas purifying apparatus, gas purifying method and conveying heating apparatus
US-2022111305-A1 · Apr 14, 2022 · US
Gas purifying apparatus, gas purifying method and conveying heating apparatus
US-11266925-B2 · Mar 8, 2022 · US
Energy conversion apparatus
US-11268476-B2 · Mar 8, 2022 · US
Energy conversion apparatus
US-2022034281-A1 · Feb 3, 2022 · US
Constant density heat exchanger and system for energy conversion
US-2021381467-A1 · Dec 9, 2021 · US
Monolithic combustor bodies
US-11181072-B2 · Nov 23, 2021 · US
Energy conversion apparatus
US-11174814-B2 · Nov 16, 2021 · US
Constant density heat exchanger and system for energy conversion
US-11125184-B2 · Sep 21, 2021 · US
Monolithic heater bodies
US-11022068-B2 · Jun 1, 2021 · US
Actuator device utilizing radiative cooling
US-11022066-B2 · Jun 1, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02G1/04?
- CPC F02G1/04 is the Cooperative Patent Classification code for “of closed-cycle type.”
- How many patents are filed under CPC F02G1/04 (of closed-cycle type)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F02G1/04 growing?
- Publication counts under this code: 8 in 2022 vs 6 in 2023 (latest complete years).