Inventor
JOHNSON JOHN J
US11 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON JOHN J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
4 patentsUS6679329B2Jan 20, 2004
Sand barrier for a level 3 multilateral wellbore junction
BAKER HUGHES INC22 citations89
US5678634AOct 21, 1997
Method and apparatus for retrieving a whipstock
BAKER HUGHES INC47 citations88
US5881808AMar 16, 1999
Window-cutting system for downhole tubulars
BAKER HUGHES INC13 citations71
US5676206AOct 14, 1997
Window-cutting system for downhole tubulars
BAKER HUGHES INC12 citations71