Inventor · disambiguated record
Ferdinand Kristen
Also filed as: KRISTEN FERDINAND
21 granted patents·6 pending applications·900 citations·filing 1997–2019
96Inventor score
Top patents by PatentIndex Score
27 records- 0198US6520270B2Depth stop assembly for a hand-held power toolHILTI AG·Filed 2001·Granted Feb 18, 2003·125 cites·11 claims
- 0296US6866105B2Electrical, fan-cooled toolHILTI AG·Filed 2003·Granted Mar 15, 2005·96 cites·7 claims
- 0396US6127751AElectric toolHILTI AG·Filed 1999·Granted Oct 3, 2000·111 cites·6 claims
- 0494US7500527B2Hand-held power tool with a decoupling deviceHILTI AG·Filed 2007·Granted Mar 10, 2009·51 cites·8 claims
- 0594US7174972B2Electrical hand-held power tool with non-contacting electrical manual control switchHILTI AG·Filed 2005·Granted Feb 13, 2007·41 cites·10 claims
- 0691US6776245B2Electrical hand-held power tool with an electropneumatic percussion mechanismHILTI AG·Filed 2002·Granted Aug 17, 2004·78 cites·3 claims
- 0791US5879111AHand-held deviceHILTI AG·Filed 1997·Granted Mar 9, 1999·84 cites·8 claims
- 0890US5954457AHand-held deviceHILTI AG·Filed 1997·Granted Sep 21, 1999·89 cites·8 claims
- 0983US6948570B2Electrical hand tool machine with vibration damped striking mechanismHILTI AG·Filed 2003·Granted Sep 27, 2005·33 cites·9 claims
- 1083US6902012B2Percussion electrical hand-held toolHILTI AG·Filed 2001·Granted Jun 7, 2005·36 cites·8 claims
- 1176US7011165B2Rotating electric hand tool implement with safety routineHILTI AG·Filed 2001·Granted Mar 14, 2006·36 cites·4 claims
- 1276US6644450B2Safety clutch for electrical hand-held toolHILTI AG·Filed 2001·Granted Nov 11, 2003·13 cites·14 claims
- 1372US7048076B2Percussion electrical hand held toolHILTI AG·Filed 2003·Granted May 23, 2006·23 cites·8 claims
- 1469US5907208ARotor for an electric motorHILTI AG·Filed 1998·Granted May 25, 1999·32 cites·8 claims
- 1561US5821661AElectromotorHILTI AG·Filed 1997·Granted Oct 13, 1998·25 cites·7 claims
- 1656US9199369B2Pneumatic striking mechanism and hand-held power toolKRISTEN FERDINAND·Filed 2010·Granted Dec 1, 2015·2 cites·1 claims
- 1756US6220046B1Equipment for working a hard materialHILTI AG·Filed 1999·Granted Apr 24, 2001·21 cites·10 claims
- 1854US12064856B2Eccentric drive for a portable power toolHILTI AG·Filed 2019·Granted Aug 20, 2024·0 cites·13 claims
- 1952US11117250B2Hand-held machine toolHILTI AG·Filed 2017·Granted Sep 14, 2021·0 cites·11 claims
- 2047US7802632B2Stranded wire retaining channel for an electrical toolHILTI AG·Filed 2004·Granted Sep 28, 2010·4 cites·13 claims
- 2141US2004206519A1Electrical hand tool machine with non-contacting electrical manual control switchFiled 2003·Application pending·0 cites
- 2241US2017057072A1Hand-held power toolHILTI AG·Filed 2015·Application pending·0 cites
- 2338US9879734B2Torque couplingSTROISSNIGG HORST·Filed 2010·Granted Jan 30, 2018·0 cites·6 claims
- 2438US2008017396A1Hand-held machine tool with vibration-reducing deviceKRISTEN FERDINAND·Filed 2007·Application pending·0 cites
- 2537US2001052416A1Electric implement with toolFiled 2001·Application pending·0 cites
- 2636US2002037785A1Controllable planetary gearFiled 2001·Application pending·0 cites
- 2734US2012097409A1Power toolONTL RAINER·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →