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OBRIEN D G INC

Overview
  • Total Patents
    11
About

OBRIEN D G INC has a total of 11 patent applications. Its first patent ever was published in 1964. It filed its patents most often in United States, Australia and EPO (European Patent Office). Its main competitors in its focus markets electrical machinery and energy, machines and civil engineering are SUNSTONE TECHNOLOGIES LLC, SUNSTONE TECH LLC and YANG GUO.

Patent filings per year

Chart showing OBRIEN D G INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Dunfee David E 5
#2 Hilberg Harold P 5
#3 O'Brien Donald G 4
#4 Lawler C B 4
#5 Amato Philip S Jr 3
#6 Amato Jr Philip S 2
#7 Walker Edward R 2
#8 Walker E 1
#9 Lawer C B 1
#10 Berian A 1

Latest patents

Publication Filing date Title
US5478970A Apparatus for terminating and interconnecting rigid electrical cable and method
US4896939A Hybrid fiber optic/electrical cable and connector
US3750088A High pressure electrical feed-through fitting
US3735024A High-pressure and hermetic electrical feed-through apparatus
US4003620A Pressure compensated marine electrical cable apparatus
US3641479A Underwater disconnectible connector
US3323090A Fluid seal for a torque motor