Ship cogeneration system using waste heat of LNG engine ship recovered through economizer
US-12546237-B2 · Feb 10, 2026 · US
the vehicles being waterborne vessels
the vehicles being waterborne vessels · 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 | F01K15/04 |
| Official title | the vehicles being waterborne vessels |
| Display label | the vehicles being waterborne vessels |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cold heat recovery system and marine vessel or floating body
US-12535249-B2 · Jan 27, 2026 · US
Cold energy recovery facility and marine vessel
US-12460860-B2 · Nov 4, 2025 · US
Cold recovery facility and marine vessel
US-12392453-B2 · Aug 19, 2025 · US
Ship cogeneration system using waste heat of lng engine ship recovered through economizer
US-2024240576-A1 · Jul 18, 2024 · US
Cold heat recovery system and marine vessel or floating body
US-2023251002-A1 · Aug 10, 2023 · US
Cold energy recovery facility and marine vessel
US-2023251031-A1 · Aug 10, 2023 · US
Cold recovery facility and marine vessel
US-2023250922-A1 · Aug 10, 2023 · US
Carbon negative energy generation system
US-11247765-B2 · Feb 15, 2022 · US
Combined power generation apparatus
US-11149592-B2 · Oct 19, 2021 · US
Carbon negative energy generation system
US-2021129967-A1 · May 6, 2021 · US
Modified CO2 cycle for long endurance unmanned underwater vehicles and resultant chirp acoustic capability
US-10946944-B2 · Mar 16, 2021 · US
Floating vessel and method of operating a floating vessel
US-10800503-B2 · Oct 13, 2020 · US
Combined power generation apparatus
US-2020200049-A1 · Jun 25, 2020 · US
System and method for free-piston power generation based on thermal differences
US-10502099-B2 · Dec 10, 2019 · US
Electrical power distribution system, method for powering a corresponding task, propulsion system and method for a ship
US-10450044-B2 · Oct 22, 2019 · US
Modified co2 cycle for long endurance unmanned underwater vehicles and resultant chirp acoustic capability
US-2019241242-A1 · Aug 8, 2019 · US
Modified CO2 cycle for long endurance unmanned underwater vehicles and resultant chirp acoustic capability
US-10364006-B2 · Jul 30, 2019 · US
Gas turbine combined cycle facility and water-surface facility
US-10337403-B2 · Jul 2, 2019 · US
Apparatus and method for periodically charging ocean vessel or other system using thermal energy conversion
US-10036510-B2 · Jul 31, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01K15/04?
- CPC F01K15/04 is the Cooperative Patent Classification code for “the vehicles being waterborne vessels.”
- How many patents are filed under CPC F01K15/04 (the vehicles being waterborne vessels)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F01K15/04 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).