Hydro Rene Leduc
12Patents
0Active
12Granted
31Portfolio score
Filing activity: Nov 21, 1980 → May 10, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5477680A | Motor driven hydraulic tool with variable displacement hydraulic pump | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6264437A | High pressure pump for all liquids | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4449552A | Prestressed assembled oleo-pneumatic accumulators | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5354181A | Hydraulic piston pumps equipped with suction valve | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4486152A | Pump with spring loaded valve | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4964345A | Rail car axle with axial hydraulic pump | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4492013A | Method for manufacturing a prestressed hydraulic accumulator | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4603711A | Prestressed hydraulic accumulator | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5554008A | High-pressure pump to feed internal-combustion engine fuel-injections | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US5032061A | Hydraulic pumps | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4629400A | Hydraulic pump with pistons and controlled suction valves | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5395125A | Rotating joint for hydraulic system | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.