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ELEVATOR EQUIP

Overview
  • Total Patents
    21
About

ELEVATOR EQUIP has a total of 21 patent applications. Its first patent ever was published in 1967. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets packaging and shipping, machines and electrical machinery and energy are LIN GUOBIN, MAXTON MFG CO and JEZEK GIORGIO.

Patent filings in countries

World map showing ELEVATOR EQUIPs patent filings in countries
# Country Total Patents
#1 United States 7
#2 Germany 4
#3 United Kingdom 3
#4 France 2
#5 Italy 2
#6 Canada 1
#7 Switzerland 1
#8 Japan 1

Patent filings per year

Chart showing ELEVATOR EQUIPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lawrence William A P 5
#2 Whelchel Robert J 5
#3 Simpson Elmer J 4
#4 Blain Roy W 3
#5 Simpson Elmer 1
#6 Mills James Arthur 1
#7 Robaato Jiei Ueruchieru 1
#8 W Blain Roy 1
#9 Rued Glen A 1
#10 Uiriamu Ei Pii Roorensu 1

Latest patents

Publication Filing date Title
US4311212A Valve control system
US4345507A Elevator fluid flow control valve
CH645167A5 Automatic pressure- and temperature-compensating valve device in a hydraulic control arrangement
IT7950824D0 Pressure and temperature compensating hydraulic valve
DE2945982A1 Pressure and temperature compensating hydraulic valve - has valve element designed as port which has variable capacity due to piston in stem
JPS52111146A Single rising position control valve device
US4011888A Unitary elevator up level control valve
US3707166A Unit valve for hydraulic elevator control
US3497677A Electric heater unit for liquid reservoirs
US3474811A Pressure-temperature compensated hydraulic valve regulator
US3503020A Magnetic proximity switch