Inventor
CARAWAY DOUGLAS
US18 patents
⚠️ This page may combine multiple inventors who share the name “CARAWAY DOUGLAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAMCO INT UK LTD
5 patentsUS5992547ANov 30, 1999
Rotary drill bits
CAMCO INT UK LTD159 citations98
US5967246AOct 19, 1999
Rotary drill bits
CAMCO INT UK LTD111 citations98
US6092613AJul 25, 2000
Rotary drill bits
CAMCO INT UK LTD76 citations95
US5904213AMay 18, 1999
Rotary drill bits
CAMCO INT UK LTD68 citations95
US5944128AAug 31, 1999
Matrix hard facing by lost wax process
CAMCO INT UK LTD28 citations92
CAMCO DRILLING GROUP LTD
4 patentsUS5732783AMar 31, 1998
In or relating to rotary drill bits
CAMCO DRILLING GROUP LTD145 citations98
US5829539ANov 3, 1998
Rotary drill bit with hardfaced fluid passages and method of manufacturing
CAMCO DRILLING GROUP LTD95 citations95
US6116355ASep 12, 2000
Choke device
CAMCO DRILLING GROUP LTD25 citations91
US5699868ADec 23, 1997
Rotary drill bits having nozzles to enhance recirculation
CAMCO DRILLING GROUP LTD27 citations90