Assignee
TRI STATE OIL TOOLS INC
23 granted patents·1,550 citations·filing 1976–1990
Top patents by PatentIndex Score
23 records- 0196US4081042AStabilizer and rotary expansible drill bit apparatusTRI STATE OIL TOOLS INC·Filed 1976·Granted Mar 28, 1978·184 cites·20 claims
- 0295US4189185AMethod for producing chambered blast holesTRI STATE OIL TOOLS INC·Filed 1976·Granted Feb 19, 1980·109 cites·9 claims
- 0394US5038859ACutting tool for removing man-made members from well boreTRI STATE OIL TOOLS INC·Filed 1988·Granted Aug 13, 1991·84 cites·21 claims
- 0494US4776394AHydraulic stabilizer for bore hole toolTRI STATE OIL TOOLS INC·Filed 1987·Granted Oct 11, 1988·181 cites·8 claims
- 0591US4219087AEnlarged bore hole drilling methodTRI STATE OIL TOOLS INC·Filed 1979·Granted Aug 26, 1980·60 cites·8 claims
- 0690US4887668ACutting tool for cutting well casingTRI STATE OIL TOOLS INC·Filed 1986·Granted Dec 19, 1989·101 cites·27 claims
- 0790US4374543AApparatus for well treatingTRI STATE OIL TOOLS INC·Filed 1981·Granted Feb 22, 1983·118 cites·3 claims
- 0889US4978260ACutting tool for removing materials from well boreTRI STATE OIL TOOLS INC·Filed 1988·Granted Dec 18, 1990·68 cites·29 claims
- 0985US5014778AMilling tool for cutting well casingTRI STATE OIL TOOLS INC·Filed 1988·Granted May 14, 1991·52 cites·36 claims
- 1085US4354559AEnlarged borehole drilling method and apparatusTRI STATE OIL TOOLS INC·Filed 1980·Granted Oct 19, 1982·64 cites·21 claims
- 1183US4796709AMilling tool for cutting well casingTRI STATE OIL TOOLS INC·Filed 1986·Granted Jan 10, 1989·75 cites·11 claims
- 1282US4390065AApparatus for well treatingTRI STATE OIL TOOLS INC·Filed 1981·Granted Jun 28, 1983·67 cites·2 claims
- 1382US4276931AJunk basketTRI STATE OIL TOOLS INC·Filed 1979·Granted Jul 7, 1981·73 cites·5 claims
- 1481US5058666ACutting tool for removing materials from well boreTRI STATE OIL TOOLS INC·Filed 1990·Granted Oct 22, 1991·58 cites·22 claims
- 1578US4984488AMethod of securing cutting elements on cutting tool bladeTRI STATE OIL TOOLS INC·Filed 1990·Granted Jan 15, 1991·62 cites·3 claims
- 1677US4314608AMethod and apparatus for well treatingTRI STATE OIL TOOLS INC·Filed 1980·Granted Feb 9, 1982·56 cites·6 claims
- 1772US4243252ADual concentric pipe jointTRI STATE OIL TOOLS INC·Filed 1979·Granted Jan 6, 1981·23 cites·4 claims
- 1871US4187920AEnlarged bore hole drilling method and apparatusTRI STATE OIL TOOLS INC·Filed 1977·Granted Feb 12, 1980·22 cites·28 claims
- 1966US4244431ADrilling apparatus with dual drill pipe and cross-overTRI STATE OIL TOOLS INC·Filed 1979·Granted Jan 13, 1981·18 cites·4 claims
- 2049US5234056ASonic method and apparatus for freeing a stuck drill stringTRI STATE OIL TOOLS INC·Filed 1990·Granted Aug 10, 1993·28 cites·12 claims
- 2146US4382623AApparatus for retrieving fluid plugTRI STATE OIL TOOLS INC·Filed 1981·Granted May 10, 1983·17 cites·1 claims
- 2243US4354560AApparatus for drilling enlarged boreholesTRI STATE OIL TOOLS INC·Filed 1981·Granted Oct 19, 1982·12 cites·6 claims
- 2339US4576402ALocking pipe subTRI STATE OIL TOOLS INC·Filed 1983·Granted Mar 18, 1986·18 cites·9 claims
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