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URBAN TRANSPORTATION DEV

Overview
  • Total Patents
    192
About

URBAN TRANSPORTATION DEV has a total of 192 patent applications. Its first patent ever was published in 1975. It filed its patents most often in United States, Canada and Japan. Its main competitors in its focus markets transport, electrical machinery and energy and environmental technology are AEG SCHIENENFAHRZEUGE, STADLER RAIL AG and SIMENS AG ESTERRAJKH.

Patent filings per year

Chart showing URBAN TRANSPORTATION DEVs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Smith Roy E 44
#2 Chadwick Dennis P 28
#3 Becker Heinz W 16
#4 Sobolewski George 8
#5 Ballantyne John 7
#6 Whitfield Fred S 7
#7 Ballantyne W John 6
#8 Wallace Alan Keith 5
#9 Roi Ii Sumisu 5
#10 Schubert Karl 4

Latest patents

Publication Filing date Title
WO8905925A1 Split disc for disc brake rotor
AU1277188A A transit system
US4846126A Natural gas fuel injection
US4911360A Precast railway crossing slab
US4819566A Stabilized steerable truck
US4817534A Present invention relates to rail vehicles
US4802419A Steered axle for a railway vehicle
US4671577A Combined regenerative and friction braking system for a vehicle
JPS61124259A Linear motor device
AU4686185A Linear induction motor
US4729455A Wheel assembly and brake therefor
CA1236183A Lim secondary reactance compensation and thrust control
CA1248056A Draw bar arrangement
US4642493A Integrally air cooled linear induction motor
CA1255764A Reaction rail for linear induction motor
US4742780A Load distribution system for railway truck
SG3585G Railway truck and lim propulsion assembly
US4635560A Contactless powering of LIM vehicle electrical system by recovery of LIM slip power
US4542699A Powered radial truck
ES8504581A1 Two-axle rail bogie