Terry R. Matthias

Person

Longlevens, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Polycrystalline diamond cutters with working surfaces having varied...
- Patent number 6,601,662
- Issue date Aug 5, 2003
- Grant Prideco, L.P.
- Terry R. Matthias
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of applying a wear-resistant layer to a surface of a downhol...
- Patent number 6,575,350
- Issue date Jun 10, 2003
- Stephen Martin Evans
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Rotary drill bit
- Patent number 6,481,511
- Issue date Nov 19, 2002
- Camco International (UK) Limited
- Terry R. Matthias
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Cutting elements for rotary drill bits
- Patent number 6,439,327
- Issue date Aug 27, 2002
- Camco International (UK) Limited
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotary drill bit design method
- Patent number 6,435,058
- Issue date Aug 20, 2002
- Camco International (UK) Limited
- Terry R. Matthias
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of applying a wear-resistant layer to a surface of a downhol...
- Patent number 6,234,261
- Issue date May 22, 2001
- Camco International (UK) Limited
- Stephen Martin Evans
- E21 - EARTH DRILLING MINING
Information Patent Grant
Preform cutting elements for rotary drag-type drill bits
- Patent number 6,145,607
- Issue date Nov 14, 2000
- Camco International (UK) Limited
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Preform cutting elements for rotary drill bits
- Patent number 6,098,729
- Issue date Aug 8, 2000
- Camco International (UK) Limited
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elements faced with superhard material
- Patent number 6,082,474
- Issue date Jul 4, 2000
- Camco International Limited
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Manufacture of elements faced with superhard material
- Patent number 6,011,232
- Issue date Jan 4, 2000
- Camco International (UK) Limited
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elements faced with superhard material
- Patent number 5,862,873
- Issue date Jan 26, 1999
- Camco Drilling Group Limited
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elements faced with superhard material
- Patent number 5,788,001
- Issue date Aug 4, 1998
- Camco Drilling Group Limited of Hycalog
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutter assemblies for rotary drill bits
- Patent number 5,769,175
- Issue date Jun 23, 1998
- Camco Drilling Group Limited
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutting elements for rotary drill bits
- Patent number 5,740,874
- Issue date Apr 21, 1998
- Camco Drilling Group Ltd. of Hycalog
- Terry R. Matthias
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elements faced with superhard material
- Patent number 5,617,928
- Issue date Apr 8, 1997
- Camco Drilling Group Limited
- Terry R. Matthias
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Elements faced with superhard material
- Patent number 5,611,649
- Issue date Mar 18, 1997
- Camco Drilling Group Limited
- Terry R. Matthias
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Elements faced with superhard material
- Patent number 5,590,728
- Issue date Jan 7, 1997
- Camco Drilling Group Limited
- Terry R. Matthias
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Polycrystalline diamond cutters with working surfaces having varied...
- Publication number 20020074168
- Publication date Jun 20, 2002
- Terry R. Matthias
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Rotary drill bit
- Publication number 20020033282
- Publication date Mar 21, 2002
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Rotary drill bit design method
- Publication number 20020033077
- Publication date Mar 21, 2002
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Method of applying a wear-resistant layer to a surface of a downhol...
- Publication number 20010030067
- Publication date Oct 18, 2001
- Stephen Martin Evans
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Method of applying a wear-resistant layer to a surface of a downhol...
- Publication number 20010017224
- Publication date Aug 30, 2001
- Stephen Martin Evans
- E21 - EARTH DRILLING MINING

Terry R. Matthias

Person

Patents Grantslast 30 patents

Polycrystalline diamond cutters with working surfaces having varied...

Method of applying a wear-resistant layer to a surface of a downhol...

Rotary drill bit

Cutting elements for rotary drill bits

Rotary drill bit design method

Method of applying a wear-resistant layer to a surface of a downhol...

Preform cutting elements for rotary drag-type drill bits

Preform cutting elements for rotary drill bits

Elements faced with superhard material

Manufacture of elements faced with superhard material

Elements faced with superhard material

Elements faced with superhard material

Cutter assemblies for rotary drill bits

Cutting elements for rotary drill bits

Elements faced with superhard material

Elements faced with superhard material

Elements faced with superhard material

Patents Applicationslast 30 patents

Polycrystalline diamond cutters with working surfaces having varied...

Rotary drill bit

Rotary drill bit design method

Method of applying a wear-resistant layer to a surface of a downhol...

Method of applying a wear-resistant layer to a surface of a downhol...