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WEATHERFORD US INC

Overview
  • Total Patents
    125
About

WEATHERFORD US INC has a total of 125 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets civil engineering, machines and machine tools are WASH OVERSHOT AND SPEAR ENGINE, CONDRA ELMO L and TELFER GEORGE.

Patent filings per year

Chart showing WEATHERFORD US INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Carter Thurman B 21
#2 Langer Friedrich H 12
#3 Schnitker Mark W 11
#4 Woodward Michael J 9
#5 Schneider David E 9
#6 Schulze-Beckinghausen Joerg Er 8
#7 Woodward Michael John 6
#8 Stringfellow William D 5
#9 Hassanzadeh Hedayat H 5
#10 Beagrie Karl J 5

Latest patents

Publication Filing date Title
US5720349A Starting mill and operations
US5642787A Section milling
US5626189A Wellbore milling tools and inserts
US5584350A Wellbore sidetracking methods
US5577566A Releasing tool
US5575333A Centralizer
US5553667A Cementing system
US5522461A Mill valve
US5531271A Whipstock side support
AU7787494A Tool for measuring the twist in a tubular member
US5425417A Wellbore tool setting system
US5429187A Milling tool and operations
US5411049A Valve
US5452759A Whipstock system
US5368098A Stage tool
WO9319283A1 Anti-rotation devices for use in wellbores
CA2116780A1 Test apparatus for pressure testing equipment having a flange and method of pressure testing
US5341873A Method and apparatus for deviated drilling
US5113940A Well apparatuses and anti-rotation device for well apparatuses
US5245877A Tong load cell assembly