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CAMCO DRILLING GROUP LTD

Overview
  • Total Patents
    259
About

CAMCO DRILLING GROUP LTD has a total of 259 patent applications. Its first patent ever was published in 1988. It filed its patents most often in United Kingdom, EPO (European Patent Office) and United States. Its main competitors in its focus markets civil engineering, machine tools and materials and metallurgy are CRAELIUS AB, CHRISTENSEN INC and LYNDE GERALD D.

Patent filings in countries

World map showing CAMCO DRILLING GROUP LTDs patent filings in countries

Patent filings per year

Chart showing CAMCO DRILLING GROUP LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Barr John Denzil 37
#2 Griffin Nigel Dennis 35
#3 Newton Alex 32
#4 Matthias Terry R 20
#5 Murdock Andrew 19
#6 Fuller John M 18
#7 Motion William C 17
#8 Barr John D 17
#9 Griffin Nigel D 17
#10 Fuller John Michael 16

Latest patents

Publication Filing date Title
GB0026073D0 Improvements in or relating to preform cutting elements for rotary drill bits
GB9906511D0 Improvements in or relating to cutting structures for rotary drill bits
US6116355A Choke device
GB9623032D0 A downhole unit for use in boreholes in a subsurface formation
GB9621216D0 Improvements in or relating to cutting structures for rotary drill bits
GB9621217D0 Improvements in or relating to preform cutting elements for rotary drill bits
GB9619486D0 Improvements in or relating to elements faced with superhard material
GB9617520D0 Improvements in or relating to elements faced with superhard material
GB9616620D0 Improvements in or relating to rotary drill bits
GB9609659D0 Automatically steered drill assembly
GB9608732D0 Improvements in or relating to rotary drill bits
GB9608172D0 Improvements in or relating to cutting elements for rotary drill bits
US5788001A Elements faced with superhard material
GB2331538A Improvemnts in or relating to elements faced with superhard material
GB9603402D0 Improvements in or relating to rotary drill bits
GB9817935D0 Improvements in or relating to steerable rotary drilling systems
GB9602754D0 Improvements in or relating to the surface finishing of components used in subsurface drilling
GB9600758D0 Improvements in or relating to rotary drill bits
GB9801900D0 Improvements in or relating to rotary drill bits
GB9521972D0 A drilling assembly for drilling holes in subsurface formations