Learn more

WESTINGHOUSE FREINS & SIGNAUX

Overview
  • Total Patents
    1,451
About

WESTINGHOUSE FREINS & SIGNAUX has a total of 1,451 patent applications. Its first patent ever was published in 1915. It filed its patents most often in France, Switzerland and Germany. Its main competitors in its focus markets transport, mechanical elements and semiconductors are SAB WABCO SPA, NEW YORK AIR BRAKE and SMITH EUGENE A.

Patent filings in countries

World map showing WESTINGHOUSE FREINS & SIGNAUXs patent filings in countries
# Country Total Patents
#1 France 716
#2 Switzerland 339
#3 Germany 102
#4 United Kingdom 88
#5 United States 54
#6 Belgium 46
#7 Spain 43
#8 Canada 24
#9 Italy 15
#10 Austria 12
#11 Sweden 7
#12 Finland 2
#13 Australia 1
#14 India 1
#15 Netherlands 1

Patent filings per year

Chart showing WESTINGHOUSE FREINS & SIGNAUXs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Freins Westinghouse Compagnie 165
#2 Westinghouse Compagnie Des Fre 133
#3 Brisson Louis-Charles 14
#4 Martin Gerard 10
#5 Francois Matare Herbert 9
#6 Gerard Martin 9
#7 Treillet Jean 9
#8 Rouillon Dipl-Ing Andre 8
#9 Welker Heinrich 7
#10 Rouillon Andre 7

Latest patents

Publication Filing date Title
DE2325509A1 PRESSURE RESERVOIR
DE2322446A1 METHOD AND DEVICE FOR PREVENTING SLIDING DURING A BRAKING PROCESS OF A WHEEL OR A GROUP OF WHEELS OF A VEHICLE
DE2315107A1 PRESSURE CONVERTER
DE2308191A1 PRESSURE MEDIUM DISTRIBUTOR
DE2262287A1 BRAKE DEVICE FOR TWO WHEELS OR GROUPS OF WHEELS OF A VEHICLE
DE2260520A1 CLAMPING DEVICE FOR AN ELASTIC LAMELLA THROUGH ITS ONE OUTER END BETWEEN THE CYLINDER BODY OR THE COMPRESSOR BOTTOM AND A PLATE
CA993984A Method and apparatus for preventing wheel slip
DE2251618A1 DEVICE FOR CONTROLLING TWO PRESSURE MEDIUM EMITTERS WITH INDEPENDENT CIRCUITS
GB1387479A Mixed air and vacuum-brake control apparatus and a relay therefor
US3760258A Static inverter
DE2232618A1 PRESSURE-CONTROLLED BRAKE DEVICE
DE2227873A1 METHOD AND DEVICE FOR PREVENTING SKIING OR SLIDING OF VEHICLE WHEELS OR WHEEL SETS ON A ROLLING TRACK OR SLIDING TRACK
DE2222051A1 Weighing pressure reducing valve
GB1377960A Pressure transforming relay
CA951221A Hand and thumb actuated three way valves
US3731598A Fluid pressure operated motor or generator
DE2112950A1 Device for feeding and locking pressurized fluid receiving organs
DE2110494A1 Control device in particular in pressure medium brake systems of vehicles
GB1333604A Load dependent vehcle braking arrangement
GB1323609A Controlling dynamic and fluid pressure brakes