Assignee
PA INC
US14 patents
Top patents by PatentIndex Score
US4629985ADec 16, 1986
Method and apparatus for measuring defects in tubular members
PA INC35 citations92
US4636727AJan 13, 1987
Method and apparatus for detecting the location of defects in tubular sections moving past a well head
PA INC26 citations91
US4710712ADec 1, 1987
Method and apparatus for measuring defects in ferromagnetic elements
PA INC49 citations89
US4611170ASep 9, 1986
Coil apparatus mounted on an axially split spool for indicating wall thickness variations of a length of ferromagnetic pipe
PA INC28 citations89
US4555665ANov 26, 1985
Magnetic flux method for measuring tubular wall thickness
PA INC33 citations89
US4492115AJan 8, 1985
Method and apparatus for measuring defects in ferromagnetic tubing
PA INC42 citations89
US4715442ADec 29, 1987
Apparatus for servicing tubular strings in subterranean wells
PA INC47 citations86
US4629991ADec 16, 1986
Methods and apparatus for detecting tubular defects having a plurality of expandable arcuate segments
PA INC54 citations82
US4792756ADec 20, 1988
Method and apparatus for measuring axially extending defects in ferromagnetic elements
PA INC22 citations81
US4704580ANov 3, 1987
Method and apparatus for measuring the depth of local defects in ferromagnetic elements
PA INC21 citations81
US4578642AMar 25, 1986
Method and apparatus for measuring velocity of ferromagnetic tubing
PA INC16 citations81
US4312320AJan 26, 1982
Incinerator apparatus and method
PA INC14 citations74
US4309958AJan 12, 1982
Coating lance centralizer
PA INC5 citations63
US4698590AOct 6, 1987
Method and apparatus for measuring velocity of ferromagnetic tubing
PA INC3 citations62