Inventor · disambiguated record
Igor Krasnov
Also filed as: KRASNOV IGOR
21 granted patents·1,205 citations·filing 1979–2002
97Inventor score
Top patents by PatentIndex Score
21 records- 0197US4793422AArticulated elevator links for top drive drill rigHUGHES TOOL CO·Filed 1988·Granted Dec 27, 1988·171 cites·4 claims
- 0297US4791997APipe handling apparatus and methodVETCO GRAY INC·Filed 1988·Granted Dec 20, 1988·172 cites·7 claims
- 0397US4529045ATop drive drilling unit with rotatable pipe supportVARCO INT·Filed 1984·Granted Jul 16, 1985·187 cites·22 claims
- 0496US6652243B2Method and apparatus for filling a storage vessel with compressed gasNEOGAS INC·Filed 2002·Granted Nov 25, 2003·108 cites·20 claims
- 0596US5884675ACascade system for fueling compressed natural gasFiled 1997·Granted Mar 23, 1999·148 cites·16 claims
- 0692US4535852ADrill string valve actuatorVARCO INT·Filed 1983·Granted Aug 20, 1985·52 cites·21 claims
- 0787US5787920ATank for compressed gasFiled 1995·Granted Aug 4, 1998·59 cites·29 claims
- 0885US6439278B1Compressed natural gas dispensing systemNEOGAS INC·Filed 2001·Granted Aug 27, 2002·40 cites·17 claims
- 0975US4658915AEasy break-out tool joint and methodVETCO GRAY INC·Filed 1985·Granted Apr 21, 1987·50 cites·20 claims
- 1074US4640384AEmergency evacuation system for high-rise buildingsKUCHER ALEXANDER·Filed 1986·Granted Feb 3, 1987·38 cites·10 claims
- 1164US4253219AWell slip assemblyVARCO INT·Filed 1979·Granted Mar 3, 1981·24 cites·28 claims
- 1263US5125148ADrill string torque coupling and method for making up and breaking out drill string connectionsKRASNOV IGOR·Filed 1990·Granted Jun 30, 1992·42 cites·20 claims
- 1358US4389760AWell slip unitVARCO INT·Filed 1979·Granted Jun 28, 1983·20 cites·22 claims
- 1457US5970786AMethod for measuring compressed natural gasFiled 1997·Granted Oct 26, 1999·20 cites·4 claims
- 1544US4730806AGate valveVETCO GRAY INC·Filed 1986·Granted Mar 15, 1988·10 cites·5 claims
- 1640US4830121ABreak-out joint with selective disablerVETCO GRAY INC·Filed 1988·Granted May 16, 1989·13 cites·4 claims
- 1739US5265683AFloor drive drilling systemKRASNOV IGOR·Filed 1992·Granted Nov 30, 1993·14 cites·27 claims
- 1839US4795128AGate type kelly cock valveVETCO GRAY INC·Filed 1988·Granted Jan 3, 1989·17 cites·3 claims
- 1933US5410924AShear gripping apparatus and methodFiled 1993·Granted May 2, 1995·7 cites·18 claims
- 2033US5275246ADrill string bridge coupler and actuatorKRASNOV IGOR·Filed 1992·Granted Jan 4, 1994·8 cites·17 claims
- 2131US4875529AAlternate forms of, side drive drillingVARCO INT·Filed 1987·Granted Oct 24, 1989·5 cites·15 claims
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