Method for solar heating a duplex engine
US-11156389-B2 · Oct 26, 2021 · US
with parabolic reflective surfaces (with cylindro-parabolic reflective surfaces F24S23/74)
with parabolic reflective surfaces (with cylindro-parabolic reflective surfaces F24S23/74) · 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 | F24S23/71 |
| Official title | with parabolic reflective surfaces (with cylindro-parabolic reflective surfaces F24S23/74) |
| Display label | with parabolic reflective surfaces (with cylindro-parabolic reflective surfaces F24S23/74) |
| Total patents | 96 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 8 |
| 2017 | 9 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 8 |
| 2021 | 14 |
| 2022 | 6 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat transfer device
US-2021325088-A1 · Oct 21, 2021 · US
Stirling cycle based solar energy powered duplex cooler
US-2021190388-A1 · Jun 24, 2021 · US
High temperature synthesis for power production and storage
US-11009261-B2 · May 18, 2021 · US
Enhanced microchannel or mesochannel devices and methods of additively manufacturing the same
US-10981141-B2 · Apr 20, 2021 · US
Solar steam explosion of algae
US-2021047604-A1 · Feb 18, 2021 · US
Solar energy powered stirling duplex machine with thermal storage tank
US-2021010721-A1 · Jan 14, 2021 · US
Parabolic trough collector module, parabolic trough collector module unit and solar thermal power station
US-10859291-B2 · Dec 8, 2020 · US
Secondary reflectors for solar collectors and methods of making the same
US-2020370788-A1 · Nov 26, 2020 · US
Secondary reflectors for solar collectors and methods of making the same
US-10808965-B2 · Oct 20, 2020 · US
High temperature synthesis for power production and storage
US-2020256587-A1 · Aug 13, 2020 · US
Double Point-Focusing Solar Energy Collection Apparatus
US-2020158378-A1 · May 21, 2020 · US
High temperature synthesis for power production and storage
US-10641524-B2 · May 5, 2020 · US
Concentrated Solar Photovoltaic and Photothermal System
US-2020106386-A1 · Apr 2, 2020 · US
Enhanced microchannel or mesochannel devices and methods of additively manufacturing the same
US-2020001265-A1 · Jan 2, 2020 · US
Low cost parabolic cylindrical trough for concentrated solar power
US-10488079-B2 · Nov 26, 2019 · US
Aerodynamic solar pods
US-10418505-B2 · Sep 17, 2019 · US
Facility for concentrating cosmic radiation equipped with a reflective optical surface inspection system
US-10309689-B2 · Jun 4, 2019 · US
Combined solar thermal power generation system
US-10267296-B2 · Apr 23, 2019 · US
Solar power generation system
US-10256390-B2 · Apr 9, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24S23/71?
- CPC F24S23/71 is the Cooperative Patent Classification code for “with parabolic reflective surfaces (with cylindro-parabolic reflective surfaces F24S23/74).”
- How many patents are filed under CPC F24S23/71 (with parabolic reflective surfaces (with cylindro-parabolic reflective surfaces F24S23/74))?
- Our database includes 96 publications tagged with this CPC code.
- Is patent activity under CPC F24S23/71 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).