Hydraulic drive system of construction machine
US-2019257304-A1 · Aug 22, 2019 · US
Feeding circuits
Feeding circuits · 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 | F15B2211/613 |
| Official title | Feeding circuits |
| Display label | Feeding circuits |
| Total patents | 140 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 11 |
| 2017 | 18 |
| 2018 | 9 |
| 2019 | 18 |
| 2020 | 13 |
| 2021 | 16 |
| 2022 | 12 |
| 2023 | 4 |
| 2024 | 9 |
| 2025 | 10 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Work machine
US-10370824-B2 · Aug 6, 2019 · US
Hydraulic system having regeneration and hybrid start
US-10344784-B2 · Jul 9, 2019 · US
Hydraulic drive system for work machine
US-10301793-B2 · May 28, 2019 · US
Method of controlling velocity of a hydraulic actuator in over-center linkage systems
US-10138915-B2 · Nov 27, 2018 · US
System having combinable transmission and implement circuits
US-10119556-B2 · Nov 6, 2018 · US
Pump-Controlled Hydraulic Circuits for Operating a Differential Hydraulic Actuator
US-2018266447-A1 · Sep 20, 2018 · US
Work machine hydraulic drive device
US-2018245312-A1 · Aug 30, 2018 · US
Pressure limiting device, in particular for an assist system for vehicles
US-2018223879-A1 · Aug 9, 2018 · US
Control system for construction machine
US-2018119388-A1 · May 3, 2018 · US
Hydraulic system having energy recovery
US-9897120-B2 · Feb 20, 2018 · US
Hydraulic system
US-2018037310-A1 · Feb 8, 2018 · US
Hydraulic driving system
US-9879405-B2 · Jan 30, 2018 · US
Hydraulic drive system
US-9810246-B2 · Nov 7, 2017 · US
Hydraulic Drive System for Work Machine
US-2017298590-A1 · Oct 19, 2017 · US
Hydraulic drive system
US-9790966-B2 · Oct 17, 2017 · US
Apparatus, controller and method for controlling the cool down of an aircraft engine rotor
US-9771932-B2 · Sep 26, 2017 · US
Hydraulic drive system
US-9709076-B2 · Jul 18, 2017 · US
Hydraulic drive device
US-2017198731-A1 · Jul 13, 2017 · US
Method of controlling velocity of a hydraulic actuator in over-center linkage systems
US-2017184139-A1 · Jun 29, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B2211/613?
- CPC F15B2211/613 is the Cooperative Patent Classification code for “Feeding circuits.”
- How many patents are filed under CPC F15B2211/613 (Feeding circuits)?
- Our database includes 140 publications tagged with this CPC code.
- Is patent activity under CPC F15B2211/613 growing?
- Publication counts under this code: 9 in 2024 vs 10 in 2025 (latest complete years).