Pumped thermal storage cycles with recuperation
US-10458721-B2 · Oct 29, 2019 · US
Closed cycles
Closed cycles · 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 | F02C1/10 |
| Official title | Closed cycles |
| Display label | Closed cycles |
| Total patents | 287 |
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 | 10 |
| 2017 | 17 |
| 2018 | 19 |
| 2019 | 32 |
| 2020 | 27 |
| 2021 | 37 |
| 2022 | 35 |
| 2023 | 40 |
| 2024 | 32 |
| 2025 | 24 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Varying compression ratios in energy storage and retrieval systems
US-10458283-B2 · Oct 29, 2019 · US
Pumped thermal systems with variable stator pressure ratio control
US-10422250-B2 · Sep 24, 2019 · US
Rankine cycle powered by bleed heat
US-2019284965-A1 · Sep 19, 2019 · US
Closed Cycle Heat Engine for a Gas Turbine Engine
US-2019249599-A1 · Aug 15, 2019 · US
Storage of Excess Heat in Cold Side of Heat Engine
US-2019162082-A1 · May 30, 2019 · US
Varying Compression Ratios in Energy Storage and Retrieval Systems
US-2019153901-A9 · May 23, 2019 · US
Storage of excess heat in cold side of heat engine
US-10233787-B2 · Mar 19, 2019 · US
Pump control of closed cycle power generation system
US-10233833-B2 · Mar 19, 2019 · US
Atmospheric storage and transfer of thermal energy
US-10082104-B2 · Sep 25, 2018 · US
Engine driven by sc02 cycle with independent shafts for combustion cycle elements and propulsion elements
US-2018238269-A1 · Aug 23, 2018 · US
Complex supercritical co2 generation system
US-2018202324-A1 · Jul 19, 2018 · US
Modular Thermal Storage
US-2018187597-A1 · Jul 5, 2018 · US
Atmospheric Storage and Transfer of Thermal Energy
US-2018187628-A1 · Jul 5, 2018 · US
Use of External Air for Closed Cycle Inventory Control
US-2018187627-A1 · Jul 5, 2018 · US
Systems and methods for energy storage and retrieval
US-10012448-B2 · Jul 3, 2018 · US
Pump Control of Closed Cycle Power Generation System
US-2018179960-A1 · Jun 28, 2018 · US
Variable Pressure Inventory Control of Closed Cycle System with a High Pressure Tank and an Intermediate Pressure Tank
US-2018179917-A1 · Jun 28, 2018 · US
Storage of Excess Heat in Cold Side of Heat Engine
US-2018179916-A1 · Jun 28, 2018 · US
Baffled Thermoclines in Thermodynamic Cycle Systems
US-2018179955-A1 · Jun 28, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02C1/10?
- CPC F02C1/10 is the Cooperative Patent Classification code for “Closed cycles.”
- How many patents are filed under CPC F02C1/10 (Closed cycles)?
- Our database includes 287 publications tagged with this CPC code.
- Is patent activity under CPC F02C1/10 growing?
- Publication counts under this code: 32 in 2024 vs 24 in 2025 (latest complete years).