Variable valve mechanism for internal combustion engine
US-10132207-B2 · Nov 20, 2018 · US
for use with overhead camshafts
for use with overhead camshafts · 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 | F01L1/143 |
| Official title | {for use with overhead camshafts} |
| Display label | for use with overhead camshafts |
| Total patents | 126 |
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 | 19 |
| 2016 | 16 |
| 2017 | 21 |
| 2018 | 20 |
| 2019 | 14 |
| 2020 | 19 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
V engine having valve property varying mechanism
US-10066553-B2 · Sep 4, 2018 · US
Camshaft for internal combustion engine
US-2018202325-A1 · Jul 19, 2018 · US
Variable valve lift apparatus
US-2018163578-A1 · Jun 14, 2018 · US
Cam follower and method for manufacturing such a cam follower
US-9850785-B2 · Dec 26, 2017 · US
Variable valve mechanism for internal combustion engine
US-2017362966-A1 · Dec 21, 2017 · US
V engine having valve property varying mechanism
US-2017350324-A1 · Dec 7, 2017 · US
Variable valve mechanism for internal combustion engine
US-2017342869-A1 · Nov 30, 2017 · US
Rocker Motion-Powered Generators For Rocker-Mounted Electronic Devices
US-2017342866-A1 · Nov 30, 2017 · US
Composite hybrid cam carrier
US-9822671-B2 · Nov 21, 2017 · US
Managing shift energy in a transmission of a vehicle
US-9777651-B2 · Oct 3, 2017 · US
Method of controlling cylinder deactivation and cda system applied by the method
US-2017276081-A1 · Sep 28, 2017 · US
Valve operating apparatus for internal combustion engine
US-2017276028-A1 · Sep 28, 2017 · US
Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method
US-9772022-B2 · Sep 26, 2017 · US
Composite hybrid cam carrier
US-2017254230-A1 · Sep 7, 2017 · US
Mechanical system forming a cam follower or a rocker arm
US-9752670-B2 · Sep 5, 2017 · US
Engine and straddled vehicle
US-2017218881-A1 · Aug 3, 2017 · US
Cylinder head of engine
US-9709000-B2 · Jul 18, 2017 · US
Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method
US-9695924-B2 · Jul 4, 2017 · US
Direct-acting valve lifter of internal combustion engine
US-9657606-B2 · May 23, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L1/143?
- CPC F01L1/143 is the Cooperative Patent Classification code for “for use with overhead camshafts.”
- How many patents are filed under CPC F01L1/143 (for use with overhead camshafts)?
- Our database includes 126 publications tagged with this CPC code.
- Is patent activity under CPC F01L1/143 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).