Integrated clutch systems for torque converters of vehicle powertrains
US-2017328455-A1 · Nov 16, 2017 · US
Systems comprising a plurality of actuated clutches (for synchronisation F16D23/04)
Systems comprising a plurality of actuated clutches (for synchronisation F16D23/04) · 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 | F16D21/00 |
| Official title | Systems comprising a plurality of actuated clutches (for synchronisation F16D23/04) |
| Display label | Systems comprising a plurality of actuated clutches (for synchronisation F16D23/04) |
| Total patents | 283 |
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 | 18 |
| 2016 | 29 |
| 2017 | 35 |
| 2018 | 23 |
| 2019 | 23 |
| 2020 | 27 |
| 2021 | 46 |
| 2022 | 37 |
| 2023 | 25 |
| 2024 | 9 |
| 2025 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Transmission system having a double wet clutch mechanism
US-9726232-B2 · Aug 8, 2017 · US
Controller for vehicle
US-9701311-B2 · Jul 11, 2017 · US
Clutch control device for four-wheel drive vehicle
US-2017182887-A1 · Jun 29, 2017 · US
Clutch control device for four-wheel drive vehicle
US-9688141-B2 · Jun 27, 2017 · US
Control device for vehicle driving device
US-9688267-B2 · Jun 27, 2017 · US
Drive force distribution device for automobile
US-9688140-B2 · Jun 27, 2017 · US
Clutch control device for 4-wheel drive vehicle
US-2017166052-A1 · Jun 15, 2017 · US
Compact electronically controlled front wheel drive torque vectoring system with single or dual axle modulation
US-2017130815-A1 · May 11, 2017 · US
Electromechanical clutch actuation system for limited slip differential
US-2017130814-A1 · May 11, 2017 · US
Inboard spring arrangement for a clutch actuated differential
US-9625025-B2 · Apr 18, 2017 · US
Clutch control device for four-wheel-drive vehicle
US-2017028843-A1 · Feb 2, 2017 · US
Speed change device
US-2017016515-A1 · Jan 19, 2017 · US
Composite friction and dog clutch
US-2016369852-A1 · Dec 22, 2016 · US
Drive force distribution device for automobile
US-2016355088-A1 · Dec 8, 2016 · US
Clutch control device for 4-wheel drive vehicle
US-2016355089-A1 · Dec 8, 2016 · US
Clutch control device for 4-wheel drive vehicle
US-2016355086-A1 · Dec 8, 2016 · US
Clutch control device for four-wheel drive vehicle
US-2016347171-A1 · Dec 1, 2016 · US
Planetary gear train of automatic transmission of vehicle
US-2016333982-A1 · Nov 17, 2016 · US
Double clutch with nested levers
US-9494201-B2 · Nov 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16D21/00?
- CPC F16D21/00 is the Cooperative Patent Classification code for “Systems comprising a plurality of actuated clutches (for synchronisation F16D23/04).”
- How many patents are filed under CPC F16D21/00 (Systems comprising a plurality of actuated clutches (for synchronisation F16D23/04))?
- Our database includes 283 publications tagged with this CPC code.
- Is patent activity under CPC F16D21/00 growing?
- Publication counts under this code: 9 in 2024 vs 11 in 2025 (latest complete years).