Nigel D. Griffin

Person

Gloucestershire, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Cutting element
- Patent number 8,910,730
- Issue date Dec 16, 2014
- National-Oilwell Varco, L.P.
- Nigel D. Griffin
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Dual-edge working surfaces for polycrystalline diamond cutting elem...
- Patent number 7,568,534
- Issue date Aug 4, 2009
- ReedHycalog UK Limited
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotary seal for directional drilling tools
- Patent number 6,962,214
- Issue date Nov 8, 2005
- Schlumberger WCP LTD
- Peter Raymond Hughes
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,878,447
- Issue date Apr 12, 2005
- Reedhycalog UK Ltd.
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
High volume density polycrystalline diamond with working surfaces d...
- Patent number 6,861,137
- Issue date Mar 1, 2005
- Reedhycalog UK Ltd.
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,861,098
- Issue date Mar 1, 2005
- Reedhycalog UK Ltd.
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method of making polycrystalline diamond with working surfaces depl...
- Patent number 6,797,326
- Issue date Sep 28, 2004
- Reedhycalog UK Ltd.
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,749,033
- Issue date Jun 15, 2004
- ReedHyoalog (UK) Limited
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,739,214
- Issue date May 25, 2004
- ReedHycalog (UK) Limited
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,592,985
- Issue date Jul 15, 2003
- Camco International (UK) Limited
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,589,640
- Issue date Jul 8, 2003
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Polycrystalline diamond partially depleted of catalyzing material
- Patent number 6,585,064
- Issue date Jul 1, 2003
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
High volume density polycrystalline diamond with working surfaces d...
- Patent number 6,562,462
- Issue date May 13, 2003
- Camco International (UK) Limited
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
High volume density polycrystalline diamond with working surfaces d...
- Patent number 6,544,308
- Issue date Apr 8, 2003
- Camco International (UK) Limited
- Nigel Dennis Griffin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Methods of treating preform elements
- Patent number 6,517,902
- Issue date Feb 11, 2003
- Camco International (UK) Limited
- Eric F. Drake
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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 machining of polycrystalline diamond
- Patent number 6,410,085
- Issue date Jun 25, 2002
- Camco International (UK) Limited
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Cutting elements for rotary drill bits
- Patent number 6,269,894
- Issue date Aug 7, 2001
- Camco International (UK) Limited
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutting elements and methods of manufacture thereof
- Patent number 6,248,447
- Issue date Jun 19, 2001
- Camco International (UK) Limited
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
Rotary drill bit having moveable formation-engaging members
- Patent number 6,142,250
- Issue date Nov 7, 2000
- Camco International (UK) Limited
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Preform elements and mountings therefor
- Patent number 6,131,678
- Issue date Oct 17, 2000
- Camco International (UK) Limited
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elements faced with superhard material
- Patent number 6,077,591
- Issue date Jun 20, 2000
- Camco International (UK) Limited
- Nigel Dennis Griffin
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Preform cutting elements for rotary drill bits
- Patent number 6,065,554
- Issue date May 23, 2000
- Camco Drilling Group Limited
- Malcolm Roy Taylor
- E21 - EARTH DRILLING MINING
Information Patent Grant
Methods of treating preform elements including polycrystalline diam...
- Patent number 6,056,911
- Issue date May 2, 2000
- Camco International (UK) Limited
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Elements faced with superhard material
- Patent number 5,888,619
- Issue date Mar 30, 1999
- Camco Drilling Group Ltd.
- Nigel D. Griffin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Elements faced with superhard material
- Patent number 5,669,271
- Issue date Sep 23, 1997
- Camco Drilling Group Limited of Hycalog
- Nigel Dennis Griffin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Cutting Element
- Publication number 20100200305
- Publication date Aug 12, 2010
- National Oilwell Varco, L.P.
- Nigel D. Griffin
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Multi-Edge Working Surfaces for Polycrystalline Diamond Cutting Ele...
- Publication number 20080142267
- Publication date Jun 19, 2008
- ReedHycalog UK, Ltd.
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
Dual-Edge Working Surfaces for Polycrystalline Diamond Cutting Elem...
- Publication number 20080142275
- Publication date Jun 19, 2008
- Grant Prideco, L.P.
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
Dual-Edge Working Surfaces for Polycrystalline Diamond Cutting Elem...
- Publication number 20060086540
- Publication date Apr 27, 2006
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
Polycrystalline Diamond Partially Depleted of Catalyzing Material
- Publication number 20050129950
- Publication date Jun 16, 2005
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
High Volume Density Polycrystalline Diamond With Working Surfaces D...
- Publication number 20050115744
- Publication date Jun 2, 2005
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
High Volume Density Polycrystalline Diamond With Working Surfaces D...
- Publication number 20040115435
- Publication date Jun 17, 2004
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
POLYCRYSTALLINE DIAMOND PARTIALLY DEPLETED OF CATALYZING MATERIAL
- Publication number 20040105806
- Publication date Jun 3, 2004
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutter and method of manufacture thereof
- Publication number 20040007394
- Publication date Jan 15, 2004
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
Cutter and method of manufacture thereof
- Publication number 20040007393
- Publication date Jan 15, 2004
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
POLYCRYSTALLINE DIAMOND PARTIALLY DEPLETED OF CATALYZING MATERIAL
- Publication number 20030235691
- Publication date Dec 25, 2003
- Nigel Dennis Griffin
- E21 - EARTH DRILLING MINING
Information Patent Application
Polycrystalline Material Element with Improved Wear Resistance And...
- Publication number 20030183426
- Publication date Oct 2, 2003
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Polycrystalline diamond partially depleted of catalyzing material
- Publication number 20030037640
- Publication date Feb 27, 2003
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Polycrystalline diamond partially depleted of catalyzing material
- Publication number 20030035958
- Publication date Feb 20, 2003
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Polycrystalline diamond partially depleted of catalyzing material
- Publication number 20030035957
- Publication date Feb 20, 2003
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Polycrystalline diamond partially depleted of catalyzing material
- Publication number 20030034182
- Publication date Feb 20, 2003
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Method of making polycrystalline diamond with working surfaces depl...
- Publication number 20030021995
- Publication date Jan 30, 2003
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Rotary seal for directional drilling tools
- Publication number 20020139584
- Publication date Oct 3, 2002
- Peter Raymond Hughes
- B22 - CASTING POWDER METALLURGY
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
High volume density polycrystalline diamond with working surfaces d...
- Publication number 20020045059
- Publication date Apr 18, 2002
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Rotary drill bit
- Publication number 20020033282
- Publication date Mar 21, 2002
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Machining of polycrystalline diamond
- Publication number 20020033383
- Publication date Mar 21, 2002
- Nigel Dennis Griffin
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Polycrystalline diamond partially depleted of catalyzing material
- Publication number 20020034632
- Publication date Mar 21, 2002
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
High volume density polycrystalline diamond with working surfaces d...
- Publication number 20020034631
- Publication date Mar 21, 2002
- Nigel Dennis Griffin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Methods of treating preform elements
- Publication number 20010049019
- Publication date Dec 6, 2001
- Eric F. Drake
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Nigel D. Griffin

Person

Patents Grantslast 30 patents

Cutting element

Dual-edge working surfaces for polycrystalline diamond cutting elem...

Rotary seal for directional drilling tools

Polycrystalline diamond partially depleted of catalyzing material

High volume density polycrystalline diamond with working surfaces d...

Polycrystalline diamond partially depleted of catalyzing material

Method of making polycrystalline diamond with working surfaces depl...

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond cutters with working surfaces having varied...

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond partially depleted of catalyzing material

High volume density polycrystalline diamond with working surfaces d...

High volume density polycrystalline diamond with working surfaces d...

Methods of treating preform elements

Rotary drill bit

Cutting elements for rotary drill bits

Rotary drill bit design method

Method of machining of polycrystalline diamond

Cutting elements for rotary drill bits

Cutting elements and methods of manufacture thereof

Preform cutting elements for rotary drag-type drill bits

Rotary drill bit having moveable formation-engaging members

Preform elements and mountings therefor

Elements faced with superhard material

Preform cutting elements for rotary drill bits

Methods of treating preform elements including polycrystalline diam...

Elements faced with superhard material

Elements faced with superhard material

Patents Applicationslast 30 patents

Cutting Element

Multi-Edge Working Surfaces for Polycrystalline Diamond Cutting Ele...

Dual-Edge Working Surfaces for Polycrystalline Diamond Cutting Elem...

Dual-Edge Working Surfaces for Polycrystalline Diamond Cutting Elem...

Polycrystalline Diamond Partially Depleted of Catalyzing Material

High Volume Density Polycrystalline Diamond With Working Surfaces D...

High Volume Density Polycrystalline Diamond With Working Surfaces D...

POLYCRYSTALLINE DIAMOND PARTIALLY DEPLETED OF CATALYZING MATERIAL

Cutter and method of manufacture thereof

Cutter and method of manufacture thereof

POLYCRYSTALLINE DIAMOND PARTIALLY DEPLETED OF CATALYZING MATERIAL

Polycrystalline Material Element with Improved Wear Resistance And...

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond partially depleted of catalyzing material

Polycrystalline diamond partially depleted of catalyzing material

Method of making polycrystalline diamond with working surfaces depl...

Rotary seal for directional drilling tools

Polycrystalline diamond cutters with working surfaces having varied...

High volume density polycrystalline diamond with working surfaces d...

Rotary drill bit

Machining of polycrystalline diamond

Polycrystalline diamond partially depleted of catalyzing material

Rotary drill bit design method

High volume density polycrystalline diamond with working surfaces d...

Methods of treating preform elements