Inventor
AUMANN JAMES T
US16 patents
⚠️ This page may combine multiple inventors who share the name “AUMANN JAMES T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHRISTENSEN INC
7 patentsUS4186569AFeb 5, 1980
Dual spring drill string shock absorber
CHRISTENSEN INC80 citations96
US4512419AApr 23, 1985
Coring device with an improved core sleeve and anti-gripping collar
CHRISTENSEN INC27 citations92
US4391328AJul 5, 1983
Drill string safety valve
CHRISTENSEN INC53 citations92
US4256192AMar 17, 1981
Pressure core barrel
CHRISTENSEN INC43 citations92
US4278138AJul 14, 1981
Composite heavy metal drill collar
CHRISTENSEN INC36 citations89
US4512423AApr 23, 1985
Coring device with an improved weighted core sleeve and anti-gripping collar
CHRISTENSEN INC17 citations70
US4272987AJun 16, 1981
Pressure core barrel flushing system
CHRISTENSEN INC15 citations66
(unassigned)
4 patentsUS6216804B1Apr 17, 2001
Apparatus for recovering core samples under pressure
92 citations98
US6378631B1Apr 30, 2002
Apparatus for recovering core samples at in situ conditions
53 citations95
US6305482B1Oct 23, 2001
Method and apparatus for transferring core sample from core retrieval chamber under pressure for transport
48 citations95
US6230825B1May 15, 2001
Apparatus for recovering core samples under pressure
35 citations95