HydraForce, Inc.
26Patents
15Active
26Granted
43Portfolio score
Filing activity: Jun 25, 1999 → Oct 28, 2022 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6966329B2 | Proportional pilot-operated flow control valve | Emerging Cross-Sectional Technologies | 35 | Expired |
| US7063100B2 | Flow regulator with pressure relief combination valve | Emerging Cross-Sectional Technologies | 30 | Expired |
| US7921880B2 | Three-way poppet valve with intermediate pilot port | Emerging Cross-Sectional Technologies | 20 | Active |
| US6789570B2 | Hydraulic valve with a position sensor | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6167906A | Bi-directional flow control valve | Emerging Cross-Sectional Technologies | 17 | Expired |
| US8757208B2 | Proportional motion control valve | Emerging Cross-Sectional Technologies | 17 | Active |
| US6267350A | Valve having a mechanism for controlling a nonlinear force | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6805155B2 | Cartridge relief valve with improved stability | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6554014B2 | Proportional pilot operated directional valve | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6116263A | Proportional priority flow regulator with reverse flow control | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7069945B2 | Cartridge relief valve with improved stability | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7261030B2 | Method and system for improving stability of hydraulic systems with load sense | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US7137406B2 | Self-cleaning filter | Emerging Cross-Sectional Technologies | 8 | Expired |
| US9657749B2 | Hydraulic suspension for vehicle and multi-functional proportional control valve for the same | Emerging Cross-Sectional Technologies | 7 | Active |
| US9322416B2 | Multi-functional proportional control valve for hydraulic suspension system for vehicle | Emerging Cross-Sectional Technologies | 6 | Active |
| US8253063B2 | Method for making a solenoid actuator | Emerging Cross-Sectional Technologies | 3 | Active |
| US10641298B2 | Hydraulic control valve for controlling pressure drop across motors | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10378559B2 | Hydraulic suspension for vehicle and multi-functional proportional control valve for the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US9964965B2 | Method of controlling proportional motion control valve | Emerging Cross-Sectional Technologies | 1 | Active |
| US10626986B2 | Hydraulic motor drive system for controlling high inertial load rotary components | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12012978B2 | Hydraulic cartridge valve with position monitoring mechanism and hydraulic control system and method | Physics | 0 | Active |
| US11946496B2 | Hydraulic control valve with visual identification system | Physics | 0 | Active |
| US12181055B2 | Hydraulic balancing control valve and ride control system incorporatng same | Emerging Cross-Sectional Technologies | 0 | Active |
| US11187330B2 | Hydraulic balancing control valve and ride control system incorporating same | Emerging Cross-Sectional Technologies | 0 | Active |
| US11953031B2 | Hydraulic control system and method with electro-proportional pressure valve and integral check | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.