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LEDUC RENE HYDRO SA

Overview
  • Total Patents
    82
About

LEDUC RENE HYDRO SA has a total of 82 patent applications. Its first patent ever was published in 1980. It filed its patents most often in France, EPO (European Patent Office) and United States. Its main competitors in its focus markets engines, pumps and turbines, mechanical elements and transport are PISTONPOWER APS, NINGBO HILEAD HYDRAULIC CO LTD and METERING PUMPS LTD.

Patent filings per year

Chart showing LEDUC RENE HYDRO SAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Porel Louis-Claude 31
#2 Porel Louis Claude 23
#3 Porel Louis C 6
#4 Porel L C 5
#5 Louis-Claude Porel 4
#6 Claude Porel Louis 3
#7 Cyphelly Ivan 1
#8 Porel L-C 1
#9 Pirel L C 1
#10 Leduc Michel 1

Latest patents

Publication Filing date Title
FR2793283A1 Process for providing a variable flow of very high pressure liquid and pump for carrying out this process
US6264437B1 High pressure pump for all liquids
FR2755472A1 HIGH PRESSURE FEEDING DEVICE FOR FUEL INJECTORS FOR INTERNAL COMBUSTION ENGINES
FR2749616A1 HIGH PRESSURE PUMP FOR ALL LIQUIDS
FR2724422A1 HYDRAULIC DEVICE FOR IMPLEMENTING A JACK
FR2721352A1 High pressure pump to supply fuel injectors for internal combustion engines.
EP0558389A1 Hydraulic piston pump with inlet valves
FR2692008A1 Improvement with piston hydraulic pumps provided with suction valves.
FR2688289A1 Rotating joint for hydraulic circuit.
FR2688034A1 Improvement with piston hydraulic pumps provided with suction valve.
FR2669380A1 Improvement to accumulators of the type including a tubular body closed at at least one of its ends by a plug
FR2667117A1 Hydraulic pump with self-priming discharge valves.
FR2657125A1 Improvements on axial piston hydraulic pumps and biais plate.
FR2651539A1 Improvement to the membranes of oleopneumatic accumulators
FR2647872A1 Rotating hydraulic joint with hydrostatic balancing
US4964345A Rail car axle with axial hydraulic pump
FR2632703A1 Composite joints for hydraulic circuits
FR2624818A2 Railway axle with an axial hydraulic pump
FR2611236A1 Hydraulic pump with axial pistons provided with non-return valve hydraulically controlled
FR2610584A1 Hydraulic device for opening and closing hatches and hoppers, particularly for railway wagons