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OTIS ENG CO

Overview
  • Total Patents
    1,796
About

OTIS ENG CO has a total of 1,796 patent applications. Its first patent ever was published in 1945. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering, machines and mechanical elements are BROWN OIL TOOLS, OTIS ENG CORP and BAKER OIL TOOLS INC.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Fredd John V 102
#2 Sizer Phillip S 78
#3 Dollison William W 53
#4 Schwendemann Kenneth L 48
#5 Gano John C 47
#6 Taylor Donald F 41
#7 Deaton Thomas M 40
#8 Canalizo Carlos R 39
#9 Gazda Imre I 37
#10 Young Carter R 36

Latest patents

Publication Filing date Title
SG119593G Running tool for use with reeled tubing and method of operating same
SG116593G Submersible well pump and well completion system
SG62393G System for handling reeled tubing
CA2185170A1 Retrievable well packer
SG28193G Gate valve with hydraulic actuator
GB9303892D0 Method of making downhole electrical connection
GB9312330D0 Improvements in or relating to shifting tools
US5244046A Coiled tubing drilling and service unit and method for oil and gas wells
GB9214991D0 Method of completing and maintaining a well
US5244044A Catcher sub
US5205355A Subsurface safety valves and method and apparatus for their operation
US5211226A Metal-to-metal seal for oil well tubing string
US5224545A Eccentrically actuated perforating guns
US5219025A Method and apparatus for gravel packing a well through a tubing string
US5253705A Hostile environment packer system
US5293551A Monitor and control circuit for electric surface controlled subsurface valve system
US5181569A Pressure operated valve
US5314026A Landing nipple
US5226483A Safety valve landing nipple and method
US5249630A Perforating type lockout tool