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Per Ivar Nese
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Rolling cone bit with gage and off-gage cutter elements positioned...
Patent number
6,510,909
Issue date
Jan 28, 2003
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING
Information
Patent Grant
Engineered enhanced inserts for rock drilling bits
Patent number
6,484,826
Issue date
Nov 26, 2002
Smith International, Inc.
Nathan R. Anderson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Engineered enhanced inserts for rock drilling bits
Patent number
6,460,637
Issue date
Oct 8, 2002
Smith International, Inc.
Michael A. Siracki
E21 - EARTH DRILLING MINING
Information
Patent Grant
Engineered enhanced inserts for rock drilling bits
Patent number
6,419,034
Issue date
Jul 16, 2002
Smith International, Inc.
J. Daniel Belnap
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rolling cone bit with gage and off-gage cutter elements positioned...
Patent number
6,390,210
Issue date
May 21, 2002
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING
Information
Patent Grant
Engineered enhanced inserts for rock drilling bits
Patent number
6,199,645
Issue date
Mar 13, 2001
Smith International, Inc.
Nathan R. Anderson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Non-symmetrical stress-resistant rotary drill bit cutter element
Patent number
6,059,054
Issue date
May 9, 2000
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rolling cone bit having gage and nestled gage cutter elements havin...
Patent number
5,967,245
Issue date
Oct 19, 1999
Smith International, Inc.
Gary Edward Garcia
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rock bit with an extended center jet
Patent number
5,853,055
Issue date
Dec 29, 1998
Smith International, Inc.
Michael A. Siracki
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rolling cone bit with enhancements in cutter element placement and...
Patent number
5,833,020
Issue date
Nov 10, 1998
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Rolling cone bit with gage and off-gage cutter elements positioned...
Publication number
20020153171
Publication date
Oct 24, 2002
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING