P

Inventor

CERKOVNIK JERRY

US5 patents
⚠️ This page may combine multiple inventors who share the name “CERKOVNIK JERRY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAKER HUGHES INC

3 patents
US5979576ANov 9, 1999

Anti-whirl drill bit

BAKER HUGHES INC82 citations95
US5873422AFeb 23, 1999

Anti-whirl drill bit

BAKER HUGHES INC86 citations95
US5025873AJun 25, 1991

Self-renewing multi-element cutting structure for rotary drag bit

BAKER HUGHES INC55 citations94

CHRISTENSEN INC

1 patent
US4515227AMay 7, 1985

Nozzle placement in a diamond rotating bit including a pilot bit

CHRISTENSEN INC63 citations94

ESTES ROBERT

1 patent
US8122954B2Feb 28, 2012

Downhole depth computation methods and related system

ESTES ROBERT13 citations76