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DE LONG CORP

Overview
  • Total Patents
    60
About

DE LONG CORP has a total of 60 patent applications. Its first patent ever was published in 1953. It filed its patents most often in United States, France and Germany. Its main competitors in its focus markets civil engineering, machines and transport are HYDROPLUS, BROWN & ASS JAMES G and LE G PROEKTNO IZYSKATELSKOGO I.

Patent filings in countries

World map showing DE LONG CORPs patent filings in countries
# Country Total Patents
#1 United States 32
#2 France 10
#3 Germany 8
#4 United Kingdom 6
#5 Denmark 2
#6 Belgium 1
#7 Greece 1

Patent filings per year

Chart showing DE LONG CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Suderow George E 28
#2 De Long Leon B 8
#3 Suderow George Erich 6
#4 Erich Suderow George 2
#5 Long Leon B De 2
#6 Lucas Joseph E 2
#7 Suderow Ethel D 2
#8 Showalter Robert N 2
#9 Finkelson Carl B 2
#10 B Delong Leon 1

Latest patents

Publication Filing date Title
US3422505A Two-piece releasable gripper
US3283516A Walking work barge
FR1388757A Mobile device for maritime works
US3230721A Walking work barge
US3013396A Convertible floating barge and working platform assembly for marine operations
FR1239792A Mobile marine device for handling heavy structures
GB857961A Improvements in mobile marine apparatus for handling heavy structures
FR1237680A Mobile device for setting up and driving piles or similar items into the water bed
FR1223947A Lifting mechanism and platform comprising said mechanism
GB846851A Improvements in jacking mechanism for mobile marine platforms
US3020956A Apparatus and method for connecting an access caission to a submerged well casing
US2946557A Jacking mechanism
US2992812A Jacking mechanism and controls
US3007317A System for erecting a marine platform
GB813670A Improvements in or relating to net ladders
US2976692A Mobile breakwater
US2877629A Method and apparatus for erecting a deep water offshore platform
US2942425A Mobile dry dock method and apparatus
US2908142A Supporting leg assembly for marine platform
US2948120A Supporting leg assembly for marine platform