Assignee
METHANE DRAINAGE VENTURES
US·9 granted patents·544 citations·filing 1982–1986
Top patents by PatentIndex Score
9 records- 0196US4651836AProcess for recovering methane gas from subterranean coalseamsMETHANE DRAINAGE VENTURES·Filed 1986·Granted Mar 24, 1987·225 cites·27 claims
- 0291US4611855AMultiple level methane drainage methodMETHANE DRAINAGE VENTURES·Filed 1984·Granted Sep 16, 1986·93 cites·18 claims
- 0386US4600061AIn-shaft drilling method for recovery of gas from subterranean formationsMETHANE DRAINAGE VENTURES·Filed 1984·Granted Jul 15, 1986·73 cites·11 claims
- 0486US4533182AProcess for production of oil and gas through horizontal drainholes from underground workingsMETHANE DRAINAGE VENTURES·Filed 1984·Granted Aug 6, 1985·73 cites·21 claims
- 0574US4687060AProduction and grout liner for methane drainage in subterranean boreholes and methodMETHANE DRAINAGE VENTURES·Filed 1986·Granted Aug 18, 1987·46 cites·6 claims
- 0656US4452489AMultiple level methane drainage shaft methodMETHANE DRAINAGE VENTURES·Filed 1982·Granted Jun 5, 1984·19 cites·15 claims
- 0738US4484643AGas-liquid-solids separation systemMETHANE DRAINAGE VENTURES·Filed 1983·Granted Nov 27, 1984·8 cites·10 claims
- 0830US4624328AIn-shaft drilling apparatus for recovery of gas from subterranean formationsMETHANE DRAINAGE VENTURES·Filed 1985·Granted Nov 25, 1986·4 cites·8 claims
- 0924US4691789AProcess for establishing a clear horizontal borehole in a subterranean formationMETHANE DRAINAGE VENTURES·Filed 1986·Granted Sep 8, 1987·3 cites·16 claims
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