P

Inventor

JURGENS RAINER

11 patents
⚠️ This page may combine multiple inventors who share the name “JURGENS RAINER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHRISTENSEN INC

6 patents
US4133516AJan 9, 1979

Shock absorber for well drilling pipe

CHRISTENSEN INC72 citations95
US4092881AJun 6, 1978

Apparatus for making-up and breaking threaded pipe connections

CHRISTENSEN INC66 citations95
US4200159AApr 29, 1980

Cutter head, drill bit and similar drilling tools

CHRISTENSEN INC195 citations93
US4187061AFeb 5, 1980

Rotary helical fluid motor with deformable sleeve for deep drilling tool

CHRISTENSEN INC48 citations92
US4011918AMar 15, 1977

Stabilizer for drill strings

CHRISTENSEN INC38 citations92
US4252102AFeb 24, 1981

Cutting element for processing rocks, metal or the like

CHRISTENSEN INC25 citations81

CHRISTENSEN DIAMOND PROD CO

2 patents
US3938853AFeb 17, 1976

Shrink-fit sleeve apparatus for drill strings

CHRISTENSEN DIAMOND PROD CO68 citations94
US3993368ANov 23, 1976

Tool joint wear protectors

CHRISTENSEN DIAMOND PROD CO32 citations80

CHRISTENSEN INC NORTON

1 patent
US4732225AMar 22, 1988

Deep-borehole drilling device with magnetic coupling

CHRISTENSEN INC NORTON87 citations94

BAKER HUGHES INC

1 patent
US5934383AAug 10, 1999

Steering device for steerable drilling tool

BAKER HUGHES INC34 citations92

EASTMAN CHRISTENSEN CO

1 patent
US4905778AMar 6, 1990

Device for producing pressure pulses in an oil well fluid medium

EASTMAN CHRISTENSEN CO21 citations81