Assignee
VANN INC GEO
US·26 granted patents·1,461 citations·filing 1980–1985
Top patents by PatentIndex Score
26 records- 0198US4445574AContinuous borehole formed horizontally through a hydrocarbon producing formationVANN INC GEO·Filed 1982·Granted May 1, 1984·251 cites·5 claims
- 0294US4598775APerforating gun charge carrier improvementsVANN INC GEO·Filed 1985·Granted Jul 8, 1986·154 cites·13 claims
- 0394US4372384AWell completion method and apparatusVANN INC GEO·Filed 1980·Granted Feb 8, 1983·179 cites·43 claims
- 0489US4544034AActuation of a gun firing headVANN INC GEO·Filed 1983·Granted Oct 1, 1985·76 cites·18 claims
- 0588US4576233ADifferential pressure actuated vent assemblyVANN INC GEO·Filed 1982·Granted Mar 18, 1986·76 cites·5 claims
- 0687US4522665APrimer mix, percussion primer and method for initiating combustionVANN INC GEO·Filed 1984·Granted Jun 11, 1985·49 cites·19 claims
- 0787US4499951ABall switch device and methodVANN INC GEO·Filed 1983·Granted Feb 19, 1985·75 cites·34 claims
- 0886US4601492AReleasable couplingVANN INC GEO·Filed 1982·Granted Jul 22, 1986·42 cites·8 claims
- 0980US4484632AWell completion method and apparatusVANN INC GEO·Filed 1982·Granted Nov 27, 1984·52 cites·41 claims
- 1080US4299287ABar actuated vent assembly and perforating gunVANN INC GEO·Filed 1980·Granted Nov 10, 1981·56 cites·11 claims
- 1179US4330039APressure actuated vent assembly for slanted wellboresVANN INC GEO·Filed 1980·Granted May 18, 1982·55 cites·20 claims
- 1278US4434854APressure actuated vent assembly for slanted wellboresVANN INC GEO·Filed 1982·Granted Mar 6, 1984·51 cites·10 claims
- 1377US4480690AAccelerated downhole pressure testingVANN INC GEO·Filed 1983·Granted Nov 6, 1984·45 cites·16 claims
- 1470US4564076AWell completion method and apparatusVANN INC GEO·Filed 1983·Granted Jan 14, 1986·36 cites·32 claims
- 1570US4512406ABar actuated vent assemblyVANN INC GEO·Filed 1982·Granted Apr 23, 1985·42 cites·23 claims
- 1668US4570714AGravel pack assemblyVANN INC GEO·Filed 1983·Granted Feb 18, 1986·38 cites·13 claims
- 1762US4538680AGun below packer completion tool stringVANN INC GEO·Filed 1982·Granted Sep 3, 1985·27 cites·32 claims
- 1861US4334580AContinuous borehole formed horizontally through a hydrocarbon producing formationVANN INC GEO·Filed 1980·Granted Jun 15, 1982·27 cites·7 claims
- 1960US4436154AMethod for controlling subsurface blowoutVANN INC GEO·Filed 1981·Granted Mar 13, 1984·25 cites·10 claims
- 2058US4501331AMethod of completing a wellVANN INC GEO·Filed 1984·Granted Feb 26, 1985·23 cites·7 claims
- 2156US4529038ADifferential vent and bar actuated circulating valve and methodVANN INC GEO·Filed 1982·Granted Jul 16, 1985·22 cites·30 claims
- 2252US4554975AHold down apparatus for wireline operated gunVANN INC GEO·Filed 1982·Granted Nov 26, 1985·19 cites·12 claims
- 2350US4436155AWell cleanup and completion apparatusVANN INC GEO·Filed 1982·Granted Mar 13, 1984·17 cites·19 claims
- 2443US4510999AWell cleanup and completion method and apparatusVANN INC GEO·Filed 1982·Granted Apr 16, 1985·12 cites·9 claims
- 2537US4598771AMethod and apparatus for firing a perforating gun and simultaneously recording the downhole pressureVANN INC GEO·Filed 1985·Granted Jul 8, 1986·9 cites·8 claims
- 2631US4497366APacker actuated vent assemblyVANN INC GEO·Filed 1984·Granted Feb 5, 1985·3 cites·15 claims
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