Inventor · disambiguated record
James D. Brugman
Also filed as: BRUGMAN JAMES · BRUGMAN JAMES D · BRUGMAN JAMES DENNIS
19 granted patents·1,098 citations·filing 1993–2014
97Inventor score
Files withVARCO INT6VARCO SHAFFER INC5SPRINGETT FRANK BENJAMIN4NAT OILWELL VARCO LP2BRUGMAN JAMES D1
Top patents by PatentIndex Score
19 records- 0198US8066070B2Blowout preventers and methods of useSPRINGETT FRANK BENJAMIN·Filed 2010·Granted Nov 29, 2011·31 cites·19 claims
- 0298US7367396B2Blowout preventers and methods of useVARCO INT·Filed 2006·Granted May 6, 2008·96 cites·17 claims
- 0394US8424607B2System and method for severing a tubularSPRINGETT FRANK BENJAMIN·Filed 2011·Granted Apr 23, 2013·26 cites·28 claims
- 0494US5451129APipe transfer systemVARCO INT·Filed 1993·Granted Sep 19, 1995·71 cites·41 claims
- 0593US7814979B2Blowout preventers and methods of useNAT OILWELL VAROO L P·Filed 2008·Granted Oct 19, 2010·55 cites·13 claims
- 0691US5588491ARotating blowout preventer and methodVARCO SHAFFER INC·Filed 1995·Granted Dec 31, 1996·135 cites·20 claims
- 0790US7044430B2Lock bars for blowout preventerVARCO INT·Filed 2004·Granted May 16, 2006·36 cites·9 claims
- 0890US5662171ARotating blowout preventer and methodVARCO SHAFFER INC·Filed 1996·Granted Sep 2, 1997·129 cites·20 claims
- 0989US8602102B2Blowout preventers and methods of useSPRINGETT FRANK BENJAMIN·Filed 2011·Granted Dec 10, 2013·8 cites·16 claims
- 1089US7350587B2Pipe guideVARCO INT·Filed 2005·Granted Apr 1, 2008·38 cites·20 claims
- 1188US10000987B2Blowout preventer monitoring system and method of using sameNAT OILWELL VARCO LP·Filed 2014·Granted Jun 19, 2018·13 cites·34 claims
- 1287US8720567B2Blowout preventers for shearing a wellbore tubularSPRINGETT FRANK BENJAMIN·Filed 2011·Granted May 13, 2014·7 cites·15 claims
- 1387US6192680B1Subsea hydraulic control systemVARCO SHAFFER INC·Filed 1999·Granted Feb 27, 2001·132 cites·24 claims
- 1486US5897094ABOP with improved door connectorsVARCO SHAFFER INC·Filed 1996·Granted Apr 27, 1999·115 cites·32 claims
- 1584US7748473B2Top drives with shaft multi-sealNAT OILWELL VARCO LP·Filed 2008·Granted Jul 6, 2010·26 cites·17 claims
- 1681US5975484ADoor connectorsVARCO SHAFFER INC·Filed 1998·Granted Nov 2, 1999·85 cites·20 claims
- 1779US7487848B2Multi-seal for top drive shaftVARCO INT·Filed 2006·Granted Feb 10, 2009·21 cites·8 claims
- 1871US7051990B2Blowout preventer and movable bonnet supportVARCO INT·Filed 2004·Granted May 30, 2006·36 cites·18 claims
- 1961USRE38249ERotating blowout preventer and methodBRUGMAN JAMES D·Filed 1998·Granted Sep 16, 2003·38 cites·29 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →