Assignee
MINROC TECHN PROMOTIONS LTD
IE·6 granted patents·186 citations·filing 1987–2007
Top patents by PatentIndex Score
6 records- 0190US4819746AReverse circulation down-the-hole hammer drill and bit thereforMINROC TECHN PROMOTIONS LTD·Filed 1987·Granted Apr 11, 1989·122 cites·33 claims
- 0275US4790390AValveless down-the-hole drillMINROC TECHN PROMOTIONS LTD·Filed 1988·Granted Dec 13, 1988·30 cites·10 claims
- 0368US7987930B2Drill bit assembly for fluid-operated percussion drill toolsMINROC TECHN PROMOTIONS LTD·Filed 2006·Granted Aug 2, 2011·12 cites·8 claims
- 0460US7975784B2Drill bit assembly for fluid-operated percussion drill toolsMINROC TECHN PROMOTIONS LTD·Filed 2007·Granted Jul 12, 2011·7 cites·7 claims
- 0550US7735584B2Percussion hammer for enlarging drilled holesMINROC TECHN PROMOTIONS LTD·Filed 2006·Granted Jun 15, 2010·3 cites·9 claims
- 0634US6290424B1Segmented ring mounting for a fluid-operated percussion drill toolMINROC TECHN PROMOTIONS LTD·Filed 1999·Granted Sep 18, 2001·12 cites·11 claims
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