Inventor · disambiguated record
Terry R. Matthias
Also filed as: MATTHIAS TERRY · MATTHIAS TERRY R · MATTHIAS TERRY RICHARD
26 granted patents·3 pending applications·1,668 citations·filing 1984–2014
98Inventor score
Files withCAMCO DRILLING GROUP LTD6CAMCO INT UK LTD6NL INDUSTRIES INC3NAT OILWELL VARCO LP2NOV DOWNHOLE EURASIA LTD2
Top patents by PatentIndex Score
29 records- 0198US6601662B2Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strengthGRANT PRIDECO LP·Filed 2001·Granted Aug 5, 2003·412 cites·50 claims
- 0297US6435058B1Rotary drill bit design methodCAMCO INT UK LTD·Filed 2001·Granted Aug 20, 2002·181 cites·11 claims
- 0396US6481511B2Rotary drill bitCAMCO INTERNAT U K LTD·Filed 2001·Granted Nov 19, 2002·143 cites·14 claims
- 0494US6234261B1Method of applying a wear-resistant layer to a surface of a downhole componentCAMCO INT UK LTD·Filed 1999·Granted May 22, 2001·174 cites·32 claims
- 0581US9156136B2Systems and methods for vapor pressure leaching polycrystalline diamond cutter elementsNAT OILWELL VARCO LP·Filed 2013·Granted Oct 13, 2015·4 cites·11 claims
- 0680US5590728AElements faced with superhard materialCAMCO DRILLING GROUP LTD·Filed 1994·Granted Jan 7, 1997·68 cites·37 claims
- 0778US6145607APreform cutting elements for rotary drag-type drill bitsCAMCO INT UK LTD·Filed 1998·Granted Nov 14, 2000·74 cites·27 claims
- 0878US5617928AElements faced with superhard materialCAMCO DRILLING GROUP LTD·Filed 1995·Granted Apr 8, 1997·61 cites·14 claims
- 0975US6575350B2Method of applying a wear-resistant layer to a surface of a downhole componentFiled 2001·Granted Jun 10, 2003·42 cites·17 claims
- 1074US6011232AManufacture of elements faced with superhard materialCAMCO INT UK LTD·Filed 1998·Granted Jan 4, 2000·64 cites·26 claims
- 1174US5611649AElements faced with superhard materialCAMCO DRILLING GROUP LTD·Filed 1995·Granted Mar 18, 1997·52 cites·12 claims
- 1273US6439327B1Cutting elements for rotary drill bitsCAMCO INT UK LTD·Filed 2000·Granted Aug 27, 2002·40 cites·23 claims
- 1370US6082474AElements faced with superhard materialCAMCO INTERNATIONAL LIMITED·Filed 1998·Granted Jul 4, 2000·61 cites·32 claims
- 1469US5862873AElements faced with superhard materialCAMCO DRILLING GROUP LTD·Filed 1996·Granted Jan 26, 1999·59 cites·33 claims
- 1568US5740874ACutting elements for rotary drill bitsCAMCO DRILLING GROUP LTD OF HY·Filed 1996·Granted Apr 21, 1998·53 cites·51 claims
- 1661US10000976B2Cutting elementNOV DOWNHOLE EURASIA LTD·Filed 2014·Granted Jun 19, 2018·2 cites·21 claims
- 1760US4727946ARotary drill bitsNL INDUSTRIES INC·Filed 1986·Granted Mar 1, 1988·29 cites·20 claims
- 1859US10000975B2Cutting elementNOV DOWNHOLE EURASIA LTD·Filed 2014·Granted Jun 19, 2018·2 cites·23 claims
- 1959US5819862ADownhole components for use in subsurface drillingFiled 1996·Granted Oct 13, 1998·40 cites·17 claims
- 2052US5788001AElements faced with superhard materialCAMCO DRILLING GROUP LTD·Filed 1996·Granted Aug 4, 1998·30 cites·27 claims
- 2151US6098729APreform cutting elements for rotary drill bitsCAMCO INT UK LTD·Filed 1998·Granted Aug 8, 2000·26 cites·27 claims
- 2250US2014231151A1Optimum powder placement in polycrystalline diamond cuttersNAT OILWELL VARCO LP·Filed 2014·Application pending·0 cites
- 2349US4570725ADrill bit cutterNL INDUSTRIES INC·Filed 1984·Granted Feb 18, 1986·15 cites·7 claims
- 2442US4669556ADrill bit and cutter thereforNL INDUSTRIES INC·Filed 1985·Granted Jun 2, 1987·13 cites·21 claims
- 2541US2010014931A1Method for distributing granular components in polycrystalline diamond compositesMATTHIAS TERRY R·Filed 2008·Application pending·0 cites
- 2638US4596296ARotary drill bitsNL PETROLEUM PROD·Filed 1984·Granted Jun 24, 1986·8 cites·15 claims
- 2737US4862977ADrill bit and cutter thereforREED TOOL COMPANY LTD·Filed 1987·Granted Sep 5, 1989·10 cites·18 claims
- 2832US5769175ACutter assemblies for rotary drill bitsCAMCO DRILLING GROUP LTD·Filed 1996·Granted Jun 23, 1998·5 cites·17 claims
- 2932US2001017224A1Method of applying a wear-resistant layer to a surface of a downhole componentFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →