High-speed long-stroke reciprocating engine
US-12421891-B1 · Sep 23, 2025 · US
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with cylinders in V-arrangement
with cylinders in V-arrangement · 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 | F01B1/04 |
| Official title | with cylinders in V-arrangement |
| Display label | with cylinders in V-arrangement |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 2 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reciprocating-piston internal combustion engine
US-11255261-B2 · Feb 22, 2022 · US
Two-stroke engine with improved performance
US-2019170055-A1 · Jun 6, 2019 · US
Crankshaft having balance weight
US-10167924-B2 · Jan 1, 2019 · US
Internal combustion engine
US-10041404-B2 · Aug 7, 2018 · US
V-shaped engine
US-9970508-B2 · May 15, 2018 · US
Crankshaft having balance weight
US-2017254388-A1 · Sep 7, 2017 · US
V-shaped engine
US-2017082171-A1 · Mar 23, 2017 · US
An internal combustion engine
US-2016333778-A1 · Nov 17, 2016 · US
“V” internal combustion engine provided with balancing countershaft
US-9303720-B2 · Apr 5, 2016 · US
Reciprocating-Piston Internal Combustion Engine
US-2015322853-A1 · Nov 12, 2015 · US
V-type block of a crank circular slider mechanism and a cylinder liner, a group of the cylinder liner, mechanical equipment thereof
US-8931442-B2 · Jan 13, 2015 · US