Inventor · disambiguated record
Alan D. Huffstutler
Also filed as: HUFFSTUTLER ALAN D · HUFFSTUTLER ALAN DEE
12 granted patents·1 pending application·920 citations·filing 1986–2001
94Inventor score
Files withDRESSER IND12
Top patents by PatentIndex Score
13 records- 0193USD384084SRotary cone drill bitDRESSER IND·Filed 1995·Granted Sep 23, 1997·56 cites·1 claims
- 0291US5421423ARotary cone drill bit with improved cutter insertDRESSER IND·Filed 1994·Granted Jun 6, 1995·144 cites·20 claims
- 0390US5439068AModular rotary drill bitDRESSER IND·Filed 1994·Granted Aug 8, 1995·134 cites·23 claims
- 0488US5291807APatterned hardfacing shapes on insert cutter conesDRESSER IND·Filed 1992·Granted Mar 8, 1994·90 cites·8 claims
- 0583US5553681ARotary cone drill bit with angled rampsDRESSER IND·Filed 1994·Granted Sep 10, 1996·88 cites·22 claims
- 0681US5624002ARotary drill bitDRESSER IND·Filed 1995·Granted Apr 29, 1997·83 cites·13 claims
- 0779US5606895AMethod for manufacture and rebuild a rotary drill bitDRESSER IND·Filed 1994·Granted Mar 4, 1997·61 cites·31 claims
- 0879US4716977ASpecially shaped cutting element for earth boring apparatusDRESSER IND·Filed 1986·Granted Jan 5, 1988·58 cites·12 claims
- 0976US5595255ARotary cone drill bit with improved support armsDRESSER IND·Filed 1994·Granted Jan 21, 1997·64 cites·19 claims
- 1075US5755297ARotary cone drill bit with integral stabilizersDRESSER IND·Filed 1996·Granted May 26, 1998·93 cites·23 claims
- 1166USD372253SSupport arm and rotary cone for modular drill bitDRESSER IND·Filed 1995·Granted Jul 30, 1996·14 cites·1 claims
- 1261US5439067ARock bit with enhanced fluid return areaDRESSER IND·Filed 1994·Granted Aug 8, 1995·35 cites·20 claims
- 1328US2001030066A1Rock bit with improved nozzle placementFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →