Method of Purging a Dual Purpose LNG/LIN Storage Tank
US-2020248871-A1 · Aug 6, 2020 · US
Recovery of thermal energy
Recovery of thermal energy · 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 | F17C9/04 |
| Official title | Recovery of thermal energy |
| Display label | Recovery of thermal energy |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 12 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 11 |
| 2021 | 17 |
| 2022 | 10 |
| 2023 | 9 |
| 2024 | 18 |
| 2025 | 10 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Boil-off gas reliquefaction system and method for discharging lubricanting oil in boil-off gas reliquefaction system
US-2020239109-A1 · Jul 30, 2020 · US
LNG boiloff gas recondensation configurations and methods
US-10704736-B2 · Jul 7, 2020 · US
Method of purging a dual purpose LNG/LIN storage tank
US-10663115-B2 · May 26, 2020 · US
Boil-off gas reliquefaction system and method for ship and method for starting boil-off gas reliquefaction system for ship
US-2020156741-A1 · May 21, 2020 · US
Gas supply device and gas supply method
US-10655784-B2 · May 19, 2020 · US
Portable instant cooling system with controlled temperature obtained through timed-release liquid or gaseous CO2 coolant for general refrigeration use in mobile and stationary containers
US-10598409-B2 · Mar 24, 2020 · US
Cryogenic power extraction
US-10480353-B2 · Nov 19, 2019 · US
Cryogenic Fluid Dispensing System Having a Chilling Reservoir
US-2019331298-A1 · Oct 31, 2019 · US
Integrated LNG gasification and power production cycle
US-10415434-B2 · Sep 17, 2019 · US
Fuel Gas Distribution Method
US-2019226638-A1 · Jul 25, 2019 · US
System Usable In Nuclear Environment For Providing Breathing Gas
US-2019180886-A1 · Jun 13, 2019 · US
System usable in nuclear environment for providing breathing gas
US-10283227-B2 · May 7, 2019 · US
Ship
US-2019112022-A1 · Apr 18, 2019 · US
Boil-off gas re-liquefying device and method for ship
US-2019112008-A1 · Apr 18, 2019 · US
Machine system having submersible pumping system, and method
US-10240562-B2 · Mar 26, 2019 · US
Ship including gas re-vaporizing system
US-2019032852-A1 · Jan 31, 2019 · US
Boil-off gas supply device
US-2019011179-A1 · Jan 10, 2019 · US
Method and arrangement for waste cold recovery in a gas-fueled sea-going vessel
US-10168001-B2 · Jan 1, 2019 · US
Heat exchange system
US-2018376622-A1 · Dec 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F17C9/04?
- CPC F17C9/04 is the Cooperative Patent Classification code for “Recovery of thermal energy.”
- How many patents are filed under CPC F17C9/04 (Recovery of thermal energy)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC F17C9/04 growing?
- Publication counts under this code: 18 in 2024 vs 10 in 2025 (latest complete years).