Assignee
ALSTHOM
FR61 patents
Top patents by PatentIndex Score
US4848910AJul 18, 1989
Sagnac type optical fiber interferometer system
ALSTHOM57 citations96
US4832993AMay 23, 1989
Method of applying a protective coating to a titanium alloy blade, and a blade obtained thereby
ALSTHOM61 citations95
US4797607AJan 10, 1989
Method of updating the scale factor of apparatus for measuring an alternating electric current by means of the faraday effect
ALSTHOM49 citations92
US4797027AJan 10, 1989
Automatic level-regulating sluice
ALSTHOM70 citations92
US4795313AJan 3, 1989
Protective tip for a titanium blade and a method of brazing such a tip
ALSTHOM37 citations92
US4644808AFeb 24, 1987
Apparatus for measuring the concentration of cavitation nuclei in a liquid
ALSTHOM37 citations92
US4761579AAug 2, 1988
Electromagnetic levitation device
ALSTHOM30 citations91
US4743138AMay 10, 1988
Device for coupling two flanged shaft ends
ALSTHOM71 citations91
US4694914ASep 22, 1987
Drilling string for drilling a bent bore, a method of using said string, and a bending device used in said string
ALSTHOM26 citations91
US4840539AJun 20, 1989
Moving blading for steam turbines
ALSTHOM39 citations89
US4816708AMar 28, 1989
Synchronous machine having superconductive stator and rotor windings
ALSTHOM42 citations89
US4808864AFeb 28, 1989
Superconducting electric rotating machine and its thermal insulation
ALSTHOM36 citations89
US4982671AJan 8, 1991
Vehicle with steerable axles
ALSTHOM30 citations88
US4757220AJul 12, 1988
Electrodynamic vernier machine
ALSTHOM47 citations88
US4685188AAug 11, 1987
Method of coupling two flanged shaft ends
ALSTHOM37 citations88
US4840221AJun 20, 1989
Device for ventilating rheostats and/or fluid radiators in a locomotive
ALSTHOM26 citations87
US4839237AJun 13, 1989
Method of laying a cobalt-chromium-tungsten protective coating on a blade made of a tungsten alloy including vanadium, and a blade coated thereby
ALSTHOM24 citations86
US4707214ANov 17, 1987
Taping machine for hot taping an electrical conductor
ALSTHOM37 citations84
US4910793AMar 20, 1990
Two-way transmission system for ground/mobile station communications
ALSTHOM33 citations81
US4841788AJun 27, 1989
Energy storage device with zero latching force
ALSTHOM22 citations81
US4678877AJul 7, 1987
Operating mechanism for a circuit-breaker, and a circuit-breaker fitted with the mechanism
ALSTHOM24 citations81
US4700257AOct 13, 1987
Superconductive AC current limiter
ALSTHOM25 citations80
US4842225AJun 27, 1989
Device for operating a railroad switch
ALSTHOM23 citations78
US4776635AOct 11, 1988
Modular seat for railway cars
ALSTHOM24 citations74
US4774388ASep 27, 1988
Compressed dielectric gas circuit breaker
ALSTHOM19 citations74
US4754109AJun 28, 1988
Compressed dielectric gas high-tension circuit breaker
ALSTHOM8 citations74
US4698468AOct 6, 1987
Sulphur hexafluoride circuit breaker usable at very low outside temperatures
ALSTHOM7 citations74
US4698469AOct 6, 1987
Sulfur hexafluoride circuit breaker operating in a very low temperature environment
ALSTHOM17 citations74
US4650942AMar 17, 1987
Compressed gas high tension circuit breaker, requiring low operating energy
ALSTHOM9 citations74
US4650941AMar 17, 1987
Compressed gas, high tension circuit breaker, with operating energy assisted by the thermal effect of the arc
ALSTHOM18 citations74
US4649243AMar 10, 1987
Double-acting, compressed gas, high tension circuit breaker with actuating energy assisted by the thermal effect of the arc
ALSTHOM8 citations74
US4834168AMay 30, 1989
Device for electromagnetically stirring liquid metal on a continuous casting line
ALSTHOM21 citations73
US5057797AOct 15, 1991
System for transmitting broadband data and/or instructions between an element moving in one plane and a control station
ALSTHOM8 citations72
US4774387ASep 27, 1988
Dielectric gas high-tension circuit-breaker having a closure resistance
ALSTHOM7 citations72
US4718237AJan 12, 1988
Thermal induction machine
ALSTHOM12 citations72
US4612428ASep 16, 1986
Compressed gas circuit breaker able to be assembled and disassembled without a significant loss of gas
ALSTHOM8 citations72
US4609798ASep 2, 1986
Means for assembling two enclosures of an electrical cutout apparatus
ALSTHOM12 citations72
US4766934AAug 30, 1988
Closure head for a hydraulic tube-testing bench
ALSTHOM8 citations71
US4745313AMay 17, 1988
Stator having three-phase superconducting windings
ALSTHOM12 citations70
US4694533ASep 22, 1987
Hinge and sectional panels on a frame enabling assembly and disassembly thereof
ALSTHOM23 citations69
US4658637AApr 21, 1987
Cell for analyzing a fluid which is condensable, at least in part
ALSTHOM14 citations69
US4943772AJul 24, 1990
Hall effect position sensor for a railway vehicle axle
ALSTHOM18 citations68
US4679824AJul 14, 1987
Fluid-tight coupling for two sections of a fluid line
ALSTHOM15 citations66
US4637480AJan 20, 1987
Azimuth measuring method for non-vertical drilling
ALSTHOM18 citations66
US4817757AApr 4, 1989
Wall covering for absorbing sound waves in a liquid medium
ALSTHOM13 citations65
US4775772AOct 4, 1988
Hinged core device for running inductive heating
ALSTHOM8 citations65
US4728124AMar 1, 1988
Connection for drilling
ALSTHOM12 citations65
US5031311AJul 16, 1991
Method for extracting packets of blades from a steam turbine
ALSTHOM13 citations64
US4580762AApr 8, 1986
Closure device for a liquid-carrying pipe
ALSTHOM17 citations63
US4854777AAug 8, 1989
Mechanical connector
ALSTHOM16 citations62
Showing the top 50 of 61 patents by PatentIndex Score.