Method for a combustion machine with two times three strokes
US-12123342-B2 · Oct 22, 2024 · US
in main cylinders
in main cylinders · 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 | F02B41/04 |
| Official title | in main cylinders |
| Display label | in main cylinders |
| Total patents | 31 |
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 | 4 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 7 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 3 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for a combustion machine with two times three strokes
US-2024301817-A1 · Sep 12, 2024 · US
Multilink cranktrains with combined eccentric shaft and camshaft drive system for internal combustion engines
US-11092090-B1 · Aug 17, 2021 · US
Variable compression ratio engine control strategy
US-11092089-B1 · Aug 17, 2021 · US
Vertical lift by series hybrid-propulsion
US-10899461-B2 · Jan 26, 2021 · US
Internal combustion engine
US-10590844-B2 · Mar 17, 2020 · US
Hybrid vehicle
US-2019375284-A1 · Dec 12, 2019 · US
Internal combustion engine
US-10358973-B2 · Jul 23, 2019 · US
Combustion engine linkage systems
US-10215090-B2 · Feb 26, 2019 · US
Internal combustion engine
US-2019017434-A1 · Jan 17, 2019 · US
Piston stroke adjustment apparatus for internal combustion engine
US-2018363547-A1 · Dec 20, 2018 · US
In-line four cylinder engine
US-10041563-B2 · Aug 7, 2018 · US
Vertical Lift by Series Hybrid-Propulsion
US-2018194484-A1 · Jul 12, 2018 · US
Methods for engine air-path reversion management
US-10018108-B2 · Jul 10, 2018 · US
Bearing structure for multi-link-type piston crank mechanism for internal combustion engines
US-9951686-B2 · Apr 24, 2018 · US
Internal combustion engine
US-2018080372-A1 · Mar 22, 2018 · US
Double-link piston crank mechanism for internal combustion engine
US-9856907-B2 · Jan 2, 2018 · US
In-line internal combustion engine having a multi-joint crank drive and a single balance shaft for damping second-order inertia forces
US-9790851-B2 · Oct 17, 2017 · US
In-line four cylinder engine
US-2017276213-A1 · Sep 28, 2017 · US
Bolted joint inner thread coating and methods of manufacturing
US-9631664-B2 · Apr 25, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B41/04?
- CPC F02B41/04 is the Cooperative Patent Classification code for “in main cylinders.”
- How many patents are filed under CPC F02B41/04 (in main cylinders)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F02B41/04 growing?
- Publication counts under this code: 3 in 2021 vs 2 in 2024 (latest complete years).