Assignee
JAPAN DRILLING CO LTD
US·4 granted patents·285 citations·filing 1997–2006
Top patents by PatentIndex Score
4 records- 0187US7802384B2Method and device for excavating submerged stratumJAPAN DRILLING CO LTD·Filed 2006·Granted Sep 28, 2010·45 cites·12 claims
- 0285US6217258B1Dual hoist derrick system for deep sea drillingJAPAN DRILLING CO LTD·Filed 1997·Granted Apr 17, 2001·161 cites·2 claims
- 0380US6870128B2Laser boring method and systemJAPAN DRILLING CO LTD·Filed 2002·Granted Mar 22, 2005·61 cites·14 claims
- 0452US6386299B1Method and apparatus for reaming pilot holeJAPAN DRILLING CO LTD·Filed 2000·Granted May 14, 2002·18 cites·5 claims
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