Reverse rotation detection in rotating machinery
US-2020056502-A1 · Feb 20, 2020 · US
Reverse rotation of engine
Reverse rotation of engine · 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 | F02D2250/06 |
| Official title | Reverse rotation of engine |
| Display label | Reverse rotation of engine |
| Total patents | 110 |
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 | 6 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 15 |
| 2019 | 23 |
| 2020 | 21 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for reducing vehicle emissions
US-10563605-B2 · Feb 18, 2020 · US
Reverse rotation detection in rotating machinery
US-10465551-B2 · Nov 5, 2019 · US
Method for estimating a physical stoppage of a motor vehicle internal combustion engine
US-2019301389-A1 · Oct 3, 2019 · US
Method for determining the angular position of an engine
US-10428752-B2 · Oct 1, 2019 · US
Systems and methods for reducing vehicle emissions
US-2019293031-A1 · Sep 26, 2019 · US
Systems and methods for reducing vehicle emissions
US-2019285017-A1 · Sep 19, 2019 · US
Systems and methods to mitigate gasoline particulate filter pressure sensor degradation
US-2019277180-A1 · Sep 12, 2019 · US
System and method for diagnosing a variable displacement engine
US-2019249618-A1 · Aug 15, 2019 · US
System and method for mitigating wet-fouling of spark plugs
US-2019242316-A1 · Aug 8, 2019 · US
Method and device for detecting reverse rotation of an internal combustion engine
US-10371072-B2 · Aug 6, 2019 · US
Driving system and driving method for vehicle
US-2019226440-A1 · Jul 25, 2019 · US
Engine automatic stop/restart device
US-10358995-B2 · Jul 23, 2019 · US
Systems and methods for wastegate diagnostics
US-2019218988-A1 · Jul 18, 2019 · US
System and method for diagnosing a turbocharger wastegate of an engine
US-2019195158-A1 · Jun 27, 2019 · US
Methods and systems for exhaust tuning valve diagnostics
US-2019176810-A1 · Jun 13, 2019 · US
Engine control device
US-2019178222-A1 · Jun 13, 2019 · US
Engine control device
US-2019178221-A1 · Jun 13, 2019 · US
Engine control apparatus to predict engine speed accurately
US-10294880-B2 · May 21, 2019 · US
Method for determining the angular position of an engine by way of a crankshaft sensor and a camshaft sensor
US-10240550-B2 · Mar 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D2250/06?
- CPC F02D2250/06 is the Cooperative Patent Classification code for “Reverse rotation of engine.”
- How many patents are filed under CPC F02D2250/06 (Reverse rotation of engine)?
- Our database includes 110 publications tagged with this CPC code.
- Is patent activity under CPC F02D2250/06 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).