Inventor
GRIFFIN NIGEL D
GB16 patents
⚠️ This page may combine multiple inventors who share the name “GRIFFIN NIGEL D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAMCO DRILLING GROUP LTD
8 patentsUS5622233AApr 22, 1997
Elements faced with superhard materials
CAMCO DRILLING GROUP LTD42 citations96
US5617928AApr 8, 1997
Elements faced with superhard material
CAMCO DRILLING GROUP LTD61 citations96
US5590728AJan 7, 1997
Elements faced with superhard material
CAMCO DRILLING GROUP LTD68 citations96
US5487436AJan 30, 1996
Cutter assemblies for rotary drill bits
CAMCO DRILLING GROUP LTD30 citations92
US5421425AJun 6, 1995
Cutting elements for rotary drill bits
CAMCO DRILLING GROUP LTD20 citations92
US5348109ASep 20, 1994
Cutter assemblies and cutting elements for rotary drill bits
CAMCO DRILLING GROUP LTD44 citations92
US5598750AFeb 4, 1997
Elements faced with superhard material
CAMCO DRILLING GROUP LTD35 citations89
US5888619AMar 30, 1999
Elements faced with superhard material
CAMCO DRILLING GROUP LTD16 citations73