Inventor
KOLTERMANN TERRY J
US20 patents
⚠️ This page may combine multiple inventors who share the name “KOLTERMANN TERRY J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
18 patentsUS7387177B2Jun 17, 2008
Bearing insert sleeve for roller cone bit
BAKER HUGHES INC73 citations97
US7392862B2Jul 1, 2008
Seal insert ring for roller cone bits
BAKER HUGHES INC56 citations95
US6026917AFeb 22, 2000
Earth-boring bit with improved bearing seal
BAKER HUGHES INC58 citations95
US7413037B2Aug 19, 2008
Metal face seal for an earth-boring bit
BAKER HUGHES INC20 citations92
US6142249ANov 7, 2000
Earth-boring bit with improved bearing seal
BAKER HUGHES INC32 citations92
US7182162B2Feb 27, 2007
Shirttails for reducing damaging effects of cuttings
BAKER HUGHES INC17 citations91
US6056072AMay 2, 2000
Lubricating grease
BAKER HUGHES INC51 citations90
US5891830AApr 6, 1999
Lubricating grease
BAKER HUGHES INC51 citations90
US7708090B2May 4, 2010
Excluder ring for earth-boring bit
BAKER HUGHES INC8 citations82
US7350600B2Apr 1, 2008
Shirttails for reducing damaging effects of cuttings
BAKER HUGHES INC7 citations72
US7168147B2Jan 30, 2007
Method for manufacturing a drilling tool with an elastomer seal having graded properties
BAKER HUGHES INC9 citations71
US9249629B2Feb 2, 2016
Enhanced backup ring edge features for metal face seal in roller cone drill bits
BAKER HUGHES INC2 citations62
US9157280B2Oct 13, 2015
Enhanced backup ring features for metal face seal in roller cone drill bits
BAKER HUGHES INC2 citations62
US7066286B2Jun 27, 2006
Gage surface scraper
BAKER HUGHES INC2 citations61
US8028770B2Oct 4, 2011
Conformal bearing for rock drill bit
BAKER HUGHES INC3 citations60
US7914006B2Mar 29, 2011
Drilling tool with elastomer seal having graded properties
BAKER HUGHES INC1 citations52
US10151148B2Dec 11, 2018
Composite metallic elastomeric sealing components for roller cone drill bits
BAKER HUGHES INC1 citations51
US7975779B2Jul 12, 2011
Threaded cone retention system for roller cone bits
BAKER HUGHES INC0 citations51