Nobumi Yoshida
24Patents
11h-index
14Co-inventors
68Inventor score
Filing activity: Sep 14, 1992 → May 24, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6460332B1 | Pressure oil energy recover/regenation apparatus | Emerging Cross-Sectional Technologies | 53 | Expired |
| US6209322A | Pressurized fluid supply system | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US6378301B2 | Pressurized fluid recovery/reutilization system | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| US6151894A | Apparatus for recovering pressure oil returned from actuators | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US7082758B2 | Hydraulic machine, system for monitoring health of hydraulic machine, and method thereof | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6170261A | Hydraulic fluid supply system | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6311488A | Cooling fan drive apparatus | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6026730A | Flow control apparatus in a hydraulic circuit | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US6922989B2 | Plural pressure oil energies selective recovery apparatus and selective recovery method therefor | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US6276133A | Pressure fluid supply and delivery apparatus | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6334308B1 | Pressure compensating valve, unloading pressure control valve and hydraulically operated device | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6186172A | Directional control valve apparatus | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5855159A | Hydraulic circuit for a boom cylinder in a hydraulic shovel | Fixed Constructions | 8 | Expired |
| US5673557A | Displacement control system for variable displacement type hydraulic pump | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6164327A | Meter-out flow control valve | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6718763B2 | Hydraulic drive unit | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5409038A | Hydraulic circuit including pressure compensating valve | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6286308A | Drive unit of cooling fan | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7124045B2 | Displacement amount measuring device | Physics | 5 | Expired |
| US5692427A | Flow reinforcement directional control valve for a hydraulic circuit | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6305333A | Air blower apparatus | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US7218099B2 | Displacement sensor | Physics | 3 | Expired |
| US7754069B2 | Filter for trapping foreign matter | Performing Operations; Transporting | 2 | Expired |
| US7034526B2 | Magnetic field forming device and displacement sensor using same | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.