Assignee
PA INC
US·14 granted patents·395 citations·filing 1980–1987
Top patents by PatentIndex Score
14 records- 0182US4555665AMagnetic flux method for measuring tubular wall thicknessPA INC·Filed 1982·Granted Nov 26, 1985·33 cites·12 claims
- 0275US4710712AMethod and apparatus for measuring defects in ferromagnetic elementsPA INC·Filed 1984·Granted Dec 1, 1987·49 cites·67 claims
- 0372US4492115AMethod and apparatus for measuring defects in ferromagnetic tubingPA INC·Filed 1984·Granted Jan 8, 1985·42 cites·13 claims
- 0470US4629991AMethods and apparatus for detecting tubular defects having a plurality of expandable arcuate segmentsPA INC·Filed 1984·Granted Dec 16, 1986·54 cites·24 claims
- 0569US4629985AMethod and apparatus for measuring defects in tubular membersPA INC·Filed 1984·Granted Dec 16, 1986·35 cites·20 claims
- 0669US4611170ACoil apparatus mounted on an axially split spool for indicating wall thickness variations of a length of ferromagnetic pipePA INC·Filed 1985·Granted Sep 9, 1986·28 cites·2 claims
- 0767US4715442AApparatus for servicing tubular strings in subterranean wellsPA INC·Filed 1986·Granted Dec 29, 1987·47 cites·13 claims
- 0866US4704580AMethod and apparatus for measuring the depth of local defects in ferromagnetic elementsPA INC·Filed 1984·Granted Nov 3, 1987·21 cites·31 claims
- 0960US4636727AMethod and apparatus for detecting the location of defects in tubular sections moving past a well headPA INC·Filed 1984·Granted Jan 13, 1987·26 cites·27 claims
- 1057US4312320AIncinerator apparatus and methodPA INC·Filed 1980·Granted Jan 26, 1982·14 cites·13 claims
- 1153US4578642AMethod and apparatus for measuring velocity of ferromagnetic tubingPA INC·Filed 1984·Granted Mar 25, 1986·16 cites·22 claims
- 1251US4792756AMethod and apparatus for measuring axially extending defects in ferromagnetic elementsPA INC·Filed 1987·Granted Dec 20, 1988·22 cites·23 claims
- 1337US4309958ACoating lance centralizerPA INC·Filed 1980·Granted Jan 12, 1982·5 cites·7 claims
- 1431US4698590AMethod and apparatus for measuring velocity of ferromagnetic tubingPA INC·Filed 1986·Granted Oct 6, 1987·3 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →