Inventor
GRIFFIN NIGEL DENNIS
GB28 patents
⚠️ This page may combine multiple inventors who share the name “GRIFFIN NIGEL DENNIS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAMCO INT UK LTD
14 patentsUS6592985B2Jul 15, 2003
Polycrystalline diamond partially depleted of catalyzing material
CAMCO INT UK LTD299 citations99
US6562462B2May 13, 2003
High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
CAMCO INT UK LTD309 citations99
US6544308B2Apr 8, 2003
High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
CAMCO INT UK LTD408 citations99
US6435058B1Aug 20, 2002
Rotary drill bit design method
CAMCO INT UK LTD181 citations99
US6410085B1Jun 25, 2002
Method of machining of polycrystalline diamond
CAMCO INT UK LTD158 citations99
US6056911AMay 2, 2000
Methods of treating preform elements including polycrystalline diamond bonded to a substrate
CAMCO INT UK LTD140 citations99
US6517902B2Feb 11, 2003
Methods of treating preform elements
CAMCO INT UK LTD180 citations98
US6269894B1Aug 7, 2001
Cutting elements for rotary drill bits
CAMCO INT UK LTD128 citations98
US6248447B1Jun 19, 2001
Cutting elements and methods of manufacture thereof
CAMCO INT UK LTD216 citations98
US6142250ANov 7, 2000
Rotary drill bit having moveable formation-engaging members
CAMCO INT UK LTD207 citations98
US6145607ANov 14, 2000
Preform cutting elements for rotary drag-type drill bits
CAMCO INT UK LTD74 citations96
US6131678AOct 17, 2000
Preform elements and mountings therefor
CAMCO INT UK LTD54 citations96
US6439327B1Aug 27, 2002
Cutting elements for rotary drill bits
CAMCO INT UK LTD40 citations93
US6077591AJun 20, 2000
Elements faced with superhard material
CAMCO INT UK LTD32 citations93
REEDHYCALOG UK LTD
6 patentsUS6878447B2Apr 12, 2005
Polycrystalline diamond partially depleted of catalyzing material
REEDHYCALOG UK LTD208 citations99
US6861137B2Mar 1, 2005
High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
REEDHYCALOG UK LTD329 citations99
US6861098B2Mar 1, 2005
Polycrystalline diamond partially depleted of catalyzing material
REEDHYCALOG UK LTD197 citations99
US6797326B2Sep 28, 2004
Method of making polycrystalline diamond with working surfaces depleted of catalyzing material
REEDHYCALOG UK LTD208 citations99
US6739214B2May 25, 2004
Polycrystalline diamond partially depleted of catalyzing material
REEDHYCALOG UK LTD213 citations99
US7568534B2Aug 4, 2009
Dual-edge working surfaces for polycrystalline diamond cutting elements
REEDHYCALOG UK LTD79 citations98