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RIGGERS MFG CO

Overview
  • Total Patents
    19
About

RIGGERS MFG CO has a total of 19 patent applications. Its first patent ever was published in 1973. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets transport, packaging and shipping and mechanical elements are BRITISH CRANE & EXCAVATOR CORP, MANITOWOC CRANE CO INC and MARINE TRAVELIFT INC.

Patent filings in countries

World map showing RIGGERS MFG COs patent filings in countries
# Country Total Patents
#1 United States 7
#2 Canada 4
#3 United Kingdom 3
#4 Germany 2
#5 France 2
#6 Japan 1

Patent filings per year

Chart showing RIGGERS MFG COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lampson Neil F 7
#2 Trask Walter Haywood 3
#3 Trask Walter H 2
#4 Engler Edgar D 1
#5 Trask W 1
#6 Niiru Efu Ramupuson 1
#7 Lorenz Gary V 1
#8 Dixon J 1
#9 Lampson N 1

Latest patents

Publication Filing date Title
US4508232A Counterbalanced crane structure
US4381839A Gantry having adjustable side supports
US4647116A Crawler suspension system
US4349115A Crane
US4243148A Counterbalanced tower crane
CA1081662A Counterbalanced tower crane
DE2438439A1 Slewing jib crane - has tailweight unit with travel gear slewing superstructure with main jib and gantry
CA1006124A Counterbalanced crane structure
GB1466686A Counter-balanced crane structure
US3836010A Counter-balanced crane structure
US3834182A Floating ring coupler