Inventor
KRASNOV IGOR
US21 patents
⚠️ This page may combine multiple inventors who share the name “KRASNOV IGOR”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VETCO GRAY INC
5 patentsUS4791997ADec 20, 1988
Pipe handling apparatus and method
VETCO GRAY INC172 citations99
US4658915AApr 21, 1987
Easy break-out tool joint and method
VETCO GRAY INC50 citations91
US4730806AMar 15, 1988
Gate valve
VETCO GRAY INC10 citations74
US4830121AMay 16, 1989
Break-out joint with selective disabler
VETCO GRAY INC13 citations71
US4795128AJan 3, 1989
Gate type kelly cock valve
VETCO GRAY INC17 citations66
VARCO INT
5 patentsUS4529045AJul 16, 1985
Top drive drilling unit with rotatable pipe support
VARCO INT187 citations99
US4535852AAug 20, 1985
Drill string valve actuator
VARCO INT52 citations92
US4389760AJun 28, 1983
Well slip unit
VARCO INT20 citations82
US4253219AMar 3, 1981
Well slip assembly
VARCO INT24 citations82
US4875529AOct 24, 1989
Alternate forms of, side drive drilling
VARCO INT5 citations61
(unassigned)
4 patentsKRASNOV IGOR
3 patentsUS5125148AJun 30, 1992
Drill string torque coupling and method for making up and breaking out drill string connections
KRASNOV IGOR42 citations91
US5275246AJan 4, 1994
Drill string bridge coupler and actuator
KRASNOV IGOR8 citations72
US5265683ANov 30, 1993
Floor drive drilling system
KRASNOV IGOR14 citations72