Multiple variable valve lift apparatus
US-9816406-B2 · Nov 14, 2017 · US
by electric means
by electric means · 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 | F01L9/20 |
| Official title | by electric means |
| Display label | by electric means |
| Total patents | 227 |
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 | 13 |
| 2016 | 36 |
| 2017 | 40 |
| 2018 | 26 |
| 2019 | 26 |
| 2020 | 24 |
| 2021 | 27 |
| 2022 | 17 |
| 2023 | 11 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Axial cam shifting valve assembly with additional discrete valve event
US-2017321575-A1 · Nov 9, 2017 · US
Method and device for controlling a solenoid actuator
US-9777864-B2 · Oct 3, 2017 · US
Methods and systems for a push pin actuator
US-9761364-B2 · Sep 12, 2017 · US
Motor vehicle drivetrain controller
US-2017241306-A1 · Aug 24, 2017 · US
Magnetically Latching Flux-Shifting Electromechanical Actuator
US-2017236630-A1 · Aug 17, 2017 · US
Valve timing control device of internal combustion engine
US-9708941-B2 · Jul 18, 2017 · US
Electromagnetic-valve controller
US-9653200-B2 · May 16, 2017 · US
Apparatus and method of controlling electronic continuously variable valve timing
US-2017096918-A1 · Apr 6, 2017 · US
Control apparatus for internal combustion engine
US-2017074204-A1 · Mar 16, 2017 · US
System and method for preventing sticking of continuous variable valve timing locking-pin
US-9540967-B2 · Jan 10, 2017 · US
Controller of variable valve apparatus of internal combustion engine and variable valve system of internal combustion engine
US-9523295-B2 · Dec 20, 2016 · US
Valve driving device using piezoelectric actuator
US-9523294-B2 · Dec 20, 2016 · US
Multiple variable valve lift apparatus
US-2016363011-A1 · Dec 15, 2016 · US
Valve-timing control device for internal combustion engine
US-2016348543-A1 · Dec 1, 2016 · US
Split ring carrier with eccentric pin with spring compliance and speed dependence
US-2016348759-A1 · Dec 1, 2016 · US
Variable valve lift apparatus
US-9500104-B2 · Nov 22, 2016 · US
Off-axis-loaded anti-backlash planetary drive for e-phaser
US-2016327124-A1 · Nov 10, 2016 · US
Method for embedded feedback control for bi-stable actuators
US-9488254-B2 · Nov 8, 2016 · US
Valve lift control systems and methods for engine startability
US-9488078-B2 · Nov 8, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L9/20?
- CPC F01L9/20 is the Cooperative Patent Classification code for “by electric means.”
- How many patents are filed under CPC F01L9/20 (by electric means)?
- Our database includes 227 publications tagged with this CPC code.
- Is patent activity under CPC F01L9/20 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).