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US ELEVATOR CORP

Overview
  • Total Patents
    23
About

US ELEVATOR CORP has a total of 23 patent applications. Its first patent ever was published in 1969. It filed its patents most often in United States, Germany and Switzerland. Its main competitors in its focus markets packaging and shipping, electrical machinery and energy and civil engineering are NINGBO YONGLIANG ELEVATOR TECH DEV CO LTD, KUM HO ELEVATOR CO LTD and RHEINSTAHL EGGERS KEHRHAHN.

Patent filings per year

Chart showing US ELEVATOR CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Holmes William K 4
#2 Lind Larry W 4
#3 Watt Richard E 4
#4 Mcintyre Richard F 2
#5 Hoelscher William Robert 2
#6 Vildibill Alvin James 1
#7 Parker John H 1
#8 Hoelscher Willilam R 1
#9 Mc Intyre R 1
#10 Hoelscher W 1

Latest patents

Publication Filing date Title
WO9518893A1 Process and apparatus for preventing corrosion of a hydraulic elevator cylinder
US5374794A Elevator control valve assembly
US5135081A Elevator position sensing system using coded vertical tape
EP0324228A2 Elevator control switch and position indicator assembly
US4750592A Elevator position reading sensor system
US4630423A Suspended-ceiling framework assembly
US3762512A Elevator rail grab safety apparatus
US3749203A Elevator floor leveling system
US3609639A Underwater electrical connector apparatus