Inventor
NESE PER IVAR
US5 patents
Patents
5 patentsUS6059054AMay 9, 2000
Non-symmetrical stress-resistant rotary drill bit cutter element
SMITH INTERNATIONAL120 citations96
US5967245AOct 19, 1999
Rolling cone bit having gage and nestled gage cutter elements having enhancements in materials and geometry to optimize borehole corner cutting duty
SMITH INTERNATIONAL100 citations96
US6510909B2Jan 28, 2003
Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty
SMITH INTERNATIONAL49 citations94
US5833020ANov 10, 1998
Rolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting duty
SMITH INTERNATIONAL61 citations94
US6390210B1May 21, 2002
Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting duty
SMITH INTERNATIONAL6 citations72