Mixing ram and bleed air in a dual entry turbine system
US-11511867-B2 · Nov 29, 2022 · US
the working fluid being an unheated pressurised gas
the working fluid being an unheated pressurised gas · 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 | F02C1/02 |
| Official title | the working fluid being an unheated pressurised gas |
| Display label | the working fluid being an unheated pressurised gas |
| Total patents | 82 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 6 |
| 2017 | 11 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 10 |
| 2021 | 10 |
| 2022 | 10 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nitrogen driven dc generator
US-2022235661-A1 · Jul 28, 2022 · US
Compressed air energy storage power generation device
US-2022220894-A1 · Jul 14, 2022 · US
Offshore Oscillating Water Column Wave Energy Conversion Device With External Permeable Structure
US-2022162986-A1 · May 26, 2022 · US
Compressed air energy storage power generation apparatus
US-11319876-B2 · May 3, 2022 · US
Integrated expander-motor compressor
US-11313618-B2 · Apr 26, 2022 · US
Energy management for a stretcher or other occupant support
US-11241348-B2 · Feb 8, 2022 · US
Compressed air energy storage power generation device and compressed air energy storage power generation method
US-2021381428-A1 · Dec 9, 2021 · US
Method and Device for Compressing a Gas
US-2021301836-A1 · Sep 30, 2021 · US
Supercritical CO2 cycle coupled to chemical looping arrangement
US-11041410-B2 · Jun 22, 2021 · US
Improved method for power generation during the regasification of a fluid by supercritical expansion
US-2021180861-A1 · Jun 17, 2021 · US
Compressed air energy storage power generation device
US-10954852-B2 · Mar 23, 2021 · US
Rotor bow management
US-10927757-B2 · Feb 23, 2021 · US
Multi-stage radial turboexpander
US-10927756-B2 · Feb 23, 2021 · US
Energy flow of an advanced environmental control system
US-2021047044-A1 · Feb 18, 2021 · US
Compressed air energy storage power generation apparatus
US-2021017905-A1 · Jan 21, 2021 · US
Compressed air energy storage power generation apparatus and compressed air energy storage power generation method
US-2021003031-A1 · Jan 7, 2021 · US
Energy flow
US-10870490-B2 · Dec 22, 2020 · US
Expansion turbine
US-2020332678-A1 · Oct 22, 2020 · US
Compressed air energy storage power generation device
US-10794279-B2 · Oct 6, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02C1/02?
- CPC F02C1/02 is the Cooperative Patent Classification code for “the working fluid being an unheated pressurised gas.”
- How many patents are filed under CPC F02C1/02 (the working fluid being an unheated pressurised gas)?
- Our database includes 82 publications tagged with this CPC code.
- Is patent activity under CPC F02C1/02 growing?
- Publication counts under this code: 6 in 2024 vs 8 in 2025 (latest complete years).