Inventor
BRUGMAN JAMES D
US17 patents
⚠️ This page may combine multiple inventors who share the name “BRUGMAN JAMES D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VARCO INT
6 patentsUS7367396B2May 6, 2008
Blowout preventers and methods of use
VARCO INT96 citations99
US5451129ASep 19, 1995
Pipe transfer system
VARCO INT71 citations95
US7051990B2May 30, 2006
Blowout preventer and movable bonnet support
VARCO INT36 citations92
US7044430B2May 16, 2006
Lock bars for blowout preventer
VARCO INT36 citations92
US7350587B2Apr 1, 2008
Pipe guide
VARCO INT38 citations91
US7487848B2Feb 10, 2009
Multi-seal for top drive shaft
VARCO INT21 citations89
VARCO SHAFFER INC
5 patentsUS5662171ASep 2, 1997
Rotating blowout preventer and method
VARCO SHAFFER INC129 citations97
US5588491ADec 31, 1996
Rotating blowout preventer and method
VARCO SHAFFER INC135 citations97
US6192680B1Feb 27, 2001
Subsea hydraulic control system
VARCO SHAFFER INC132 citations96
US5897094AApr 27, 1999
BOP with improved door connectors
VARCO SHAFFER INC115 citations95
US5975484ANov 2, 1999
Door connectors
VARCO SHAFFER INC85 citations94