Inventor · disambiguated record
James T. Aumann
Also filed as: AUMANN JAMES T
16 granted patents·687 citations·filing 1974–2001
96Inventor score
Files withCHRISTENSEN INC7CHRISTENSEN INC NORTON2ENERGY VENTURES INC1JAPAN NAT OIL CORP1SCHLUMBERGER TECHNOLOGY CORP1
Top patents by PatentIndex Score
16 records- 0198US4186569ADual spring drill string shock absorberCHRISTENSEN INC·Filed 1978·Granted Feb 5, 1980·80 cites·29 claims
- 0288US6216804B1Apparatus for recovering core samples under pressureFiled 1998·Granted Apr 17, 2001·92 cites·74 claims
- 0385US6659204B2Method and apparatus for recovering core samples under pressureJAPAN NAT OIL CORP·Filed 2001·Granted Dec 9, 2003·52 cites·33 claims
- 0485US6378631B1Apparatus for recovering core samples at in situ conditionsFiled 2000·Granted Apr 30, 2002·53 cites·27 claims
- 0583US6305482B1Method and apparatus for transferring core sample from core retrieval chamber under pressure for transportFiled 2000·Granted Oct 23, 2001·48 cites·20 claims
- 0679US4391328ADrill string safety valveCHRISTENSEN INC·Filed 1981·Granted Jul 5, 1983·53 cites·6 claims
- 0779US4256192APressure core barrelCHRISTENSEN INC·Filed 1979·Granted Mar 17, 1981·43 cites·8 claims
- 0879US3955623ASubsea control valve apparatusSCHLUMBERGER TECHNOLOGY CORP·Filed 1974·Granted May 11, 1976·40 cites·17 claims
- 0977US6230825B1Apparatus for recovering core samples under pressureFiled 2000·Granted May 15, 2001·35 cites·6 claims
- 1070US5253720AMethod and apparatus for taking an undisturbed core sampleENERGY VENTURES INC·Filed 1991·Granted Oct 19, 1993·52 cites·19 claims
- 1166US4278138AComposite heavy metal drill collarCHRISTENSEN INC·Filed 1980·Granted Jul 14, 1981·36 cites·9 claims
- 1264US4577704ABearing system for a downhole motorCHRISTENSEN INC NORTON·Filed 1980·Granted Mar 25, 1986·30 cites·4 claims
- 1362US4512419ACoring device with an improved core sleeve and anti-gripping collarCHRISTENSEN INC·Filed 1983·Granted Apr 23, 1985·27 cites·18 claims
- 1446US4512423ACoring device with an improved weighted core sleeve and anti-gripping collarCHRISTENSEN INC·Filed 1983·Granted Apr 23, 1985·17 cites·15 claims
- 1543US4272987APressure core barrel flushing systemCHRISTENSEN INC·Filed 1979·Granted Jun 16, 1981·15 cites·11 claims
- 1639US4573539AHydraulically pulsed indexing system for sleeve-type core barrelsCHRISTENSEN INC NORTON·Filed 1983·Granted Mar 4, 1986·14 cites·16 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →