Inventor
LEUTHEN JOHN M
US14 patents
⚠️ This page may combine multiple inventors who share the name “LEUTHEN JOHN M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
5 patentsUS7607896B2Oct 27, 2009
Systems and methods for power ride-through in variable speed drives
BAKER HUGHES INC20 citations92
US6586900B2Jul 1, 2003
Method for boosting the output voltage of a variable frequency drive
BAKER HUGHES INC13 citations83
US7834643B2Nov 16, 2010
Systems and methods for reducing distortion in a power source using an active harmonics filter
BAKER HUGHES INC10 citations81
US5220494AJun 15, 1993
Protection circuit and method for variable speed drives utilizing phase controlled converters
BAKER HUGHES INC3 citations62
US9407134B2Aug 2, 2016
Systems and methods for limiting current inrush in electric drive systems
BAKER HUGHES INC2 citations54
HUGHES TOOL CO
5 patentsUS4680664AJul 14, 1987
Overcurrent protection circuit for power transistors
HUGHES TOOL CO22 citations81
US4542324ASep 17, 1985
Overtemperature speed control for a variable speed drive
HUGHES TOOL CO23 citations81
US4491778AJan 1, 1985
Motor variable frequency drive
HUGHES TOOL CO25 citations81
US4598353AJul 1, 1986
Thyristor firing circuit for determining phase angle
HUGHES TOOL CO8 citations73
US4467258AAug 21, 1984
Power factor correction for variable speed drive
HUGHES TOOL CO15 citations73