Cylinder device
US-2017363208-A1 · Dec 21, 2017 · US
Mechanical Engineering
Mechanical Engineering · 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 | F01L9/02 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 128 |
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 | 14 |
| 2016 | 25 |
| 2017 | 21 |
| 2018 | 17 |
| 2019 | 26 |
| 2020 | 15 |
| 2021 | 9 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydraulic circuit for valve deactivation
US-2017314430-A1 · Nov 2, 2017 · US
Internal combustion engine with elevated compression ratio and multi-stage boosting including a variable-speed supercharger
US-9797321-B2 · Oct 24, 2017 · US
Camshaft thrust bearing lubrication system
US-9797280-B2 · Oct 24, 2017 · US
Variable valve lift apparatus
US-9771838-B2 · Sep 26, 2017 · US
Hydraulic circuit for valve deactivation
US-9765656-B2 · Sep 19, 2017 · US
Internal combustion engine with elevated compression ratio and multi-stage boosting including a variable -speed supercharger
US-2017226940-A1 · Aug 10, 2017 · US
Oil supply device for engine
US-2017211431-A1 · Jul 27, 2017 · US
Engine valve deactivation system
US-9702309-B2 · Jul 11, 2017 · US
System comprising an accumulator upstream of a lost motion component in a valve bridge
US-9702276-B2 · Jul 11, 2017 · US
Camshaft adjustement device for an internal combustion engine
US-2017159510-A1 · Jun 8, 2017 · US
System and method for safe valve activation in a dynamic skip firing engine
US-9650923-B2 · May 16, 2017 · US
Engine variable valve lift system having integrated hydraulic fluid retention
US-9631526-B2 · Apr 25, 2017 · US
Camshaft thrust bearing lubrication system
US-2017101909-A1 · Apr 13, 2017 · US
Camshaft phaser and actuator for the same
US-9617878-B2 · Apr 11, 2017 · US
Camshaft adjusting device
US-2017096915-A1 · Apr 6, 2017 · US
Lost motion assembly in a valve bridge for use with a valve train comprising a hydraulic lash adjuster
US-9611767-B2 · Apr 4, 2017 · US
Camshaft phase adjuster including a camshaft with helical grooves
US-9593603-B2 · Mar 14, 2017 · US
System and method for controlling a variable valve actuation system to reduce delay associated with reactivating a cylinder
US-9567928-B2 · Feb 14, 2017 · US
Variable displacement pump
US-2017030351-A1 · Feb 2, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L9/02?
- CPC F01L9/02 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F01L9/02 (Mechanical Engineering)?
- Our database includes 128 publications tagged with this CPC code.
- Is patent activity under CPC F01L9/02 growing?
- Publication counts under this code: 9 in 2021 vs 1 in 2022 (latest complete years).