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LINDSEY COMPLETION SYSTEMS INC

Overview
  • Total Patents
    16
About

LINDSEY COMPLETION SYSTEMS INC has a total of 16 patent applications. Its first patent ever was published in 1988. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets civil engineering are REACTIVE DOWNHOLE TOOLS LTD, ARDYNE TECH LIMITED and DRESSER IND PROD LTD.

Patent filings in countries

World map showing LINDSEY COMPLETION SYSTEMS INCs patent filings in countries
# Country Total Patents
#1 United States 12
#2 Canada 3
#3 United Kingdom 1

Patent filings per year

Chart showing LINDSEY COMPLETION SYSTEMS INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Earth drilling

Top inventors

# Name Total Patents
#1 Lindsey Hiram E 6
#2 Allwin Roger P 5
#3 Cochran Chudleigh B 4
#4 Adams Richard W 4
#5 Cole Paul W 2
#6 Lindsey Jr Hiram E 1
#7 Lindsey Hiram E Jr 1
#8 Lindsey Jr Hiram Edward 1

Latest patents

Publication Filing date Title
US5048606A Setting tool for a liner hanger assembly
US5048612A Double nut setting tool and linger hanger assembly
US5074362A Finger nut setting tool and liner hanger assembly
US5058672A Landing collar and float valve assembly
US5058671A Pipe insert assembly
US5048611A Pressure operated circulation valve
CA2009284A1 Liner and drill pipe assembly
CA1315672C Stage cementing valve
US4926938A Rotatable liner hanger with multiple bearings and cones
US4880058A Stage cementing valve
US4862966A Liner hanger with collapsible ball valve seat
US4848462A Rotatable liner hanger
US4828037A Liner hanger with retrievable ball valve seat
US4898243A Liner and drill pipe assembly