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OTIS ENG CORP

Overview
  • Total Patents
    148
About

OTIS ENG CORP has a total of 148 patent applications. Its first patent ever was published in 1965. It filed its patents most often in United Kingdom, United States and Japan. Its main competitors in its focus markets civil engineering, machines and mechanical elements are OTIS ENG CO, BROWN OIL TOOLS and AKER SUBSEA INC.

Patent filings in countries

World map showing OTIS ENG CORPs patent filings in countries

Patent filings per year

Chart showing OTIS ENG CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sizer Phillip S 9
#2 Fredd John V 7
#3 Dollison William W 5
#4 Sizer P 4
#5 Canalizo Carlos R 4
#6 Brown Norman F 3
#7 Imaa Iwan Gazuda 2
#8 Taylor D 2
#9 Fredd J 2
#10 Raulins George Max 2

Latest patents

Publication Filing date Title
GB8418185D0 Test tree
JPS56108492A Side pocket mandrel and its manufacture
GB2028400A Production from and servicing of wells
GB2051126A Low alloy steel
JPS55149075A Pressure*temperature*time down hole recorder for microprocessor computer processing
GB1594913A Coupling for connecting conduit sections
GB1561847A Locating and locing apparatus for oil or gas well tools
US3845815A Well tools
US3837398A Kickover tool
US3831676A Stuffing box for wireline well apparatus
US3826462A Large bore rotary safety valves for wells
US3856081A Locking devices
US3842853A Fire safety valve
US3848668A Apparatus for treating wells
US3732928A Method of and apparatus for removing and positioning well tools in offset landing nipples
US3739850A Cross over assembly
US3710862A Method and apparatus for treating and preparing wells for production
US3762725A Wireline stuffing box and sheave
US3792732A Well flow controlling system and apparatus
US3778089A Pipe coupling