Inventor · disambiguated record
Bernard Lionel Gien
Also filed as: GIEN BERNARD L · GIEN BERNARD LIONEL
15 granted patents·3 pending applications·153 citations·filing 1975–2013
93Inventor score
Files withGIEN ABRAHAM4GIEN BERNARD L4GIEN BERNARD LIONEL4GEIN ABRAHAM1P G DRILLING EQUIPMENT & ACCES1
Top patents by PatentIndex Score
18 records- 0163US7469751B2Pneumatic hammerGIEN BERNARD LIONEL·Filed 2005·Granted Dec 30, 2008·9 cites·2 claims
- 0261US7198120B2Down-the-hole drill assemblyGIEN BERNARD LIONEL·Filed 2004·Granted Apr 3, 2007·10 cites·4 claims
- 0355US4402370AValveless pneumatic hammerGEIN ABRAHAM·Filed 1981·Granted Sep 6, 1983·30 cites·14 claims
- 0453US7712554B2Percussive drill bit provided with an improved chuck assemblyGIEN BERNARD LIONEL·Filed 2006·Granted May 11, 2010·3 cites·12 claims
- 0548US3970153APneumatic percussion machinesGIEN ABRAHAM·Filed 1975·Granted Jul 20, 1976·16 cites·5 claims
- 0647US2013327576A1Percussive drill bit provided with an improved chuck assemblyGIEN BERNARD L·Filed 2013·Application pending·0 cites
- 0745US6550554B2Rock drillFiled 2000·Granted Apr 22, 2003·9 cites·5 claims
- 0844US2010236832A1Percussive drill bit provided with an improved chuck assemblyGIEN BERNARD LIONEL·Filed 2010·Application pending·0 cites
- 0943US4591004APneumatic percussion machineGIEN BERNARD L·Filed 1984·Granted May 27, 1986·14 cites·12 claims
- 1042US6543557B2Drill hammer assemblyFiled 2001·Granted Apr 8, 2003·6 cites·7 claims
- 1139US5915483ADown the hole drillFiled 1996·Granted Jun 29, 1999·16 cites·4 claims
- 1236US2012145464A1Bit assembly for a down-the-hole hammer drillGIEN BERNARD L·Filed 2010·Application pending·0 cites
- 1334US5377772ADrill string shock absorbersFiled 1994·Granted Jan 3, 1995·8 cites·10 claims
- 1432US4753302AValveless pneumatic hammerGIEN ABRAHAM·Filed 1986·Granted Jun 28, 1988·8 cites·16 claims
- 1532US4094366APneumatic percussion machinesGIEN ABRAHAM·Filed 1976·Granted Jun 13, 1978·6 cites·5 claims
- 1629US5080179ADown the hole hammer equipmentP G DRILLING EQUIPMENT & ACCES·Filed 1990·Granted Jan 14, 1992·10 cites·20 claims
- 1728US4610314ATruck mounted drilling machineGIEN BERNARD L·Filed 1985·Granted Sep 9, 1986·4 cites·5 claims
- 1827US5065823AExtraction device for pneumatically actuated drilling toolsGIEN ABRAHAM·Filed 1991·Granted Nov 19, 1991·4 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →