Assignee
DOBLE ENG
US14 patents
Top patents by PatentIndex Score
US4973919ANov 27, 1990
Amplifying with directly coupled, cascaded amplifiers
DOBLE ENG82 citations94
US6633169B1Oct 14, 2003
Monitoring leakage currents from high-voltage devices
DOBLE ENG23 citations91
US5635871AJun 3, 1997
Low phase error amplifying
DOBLE ENG37 citations91
US5317277AMay 31, 1994
Power amplifying apparatus for supplying A.C. signals having a maximum loop gain at a desired frequency
DOBLE ENG39 citations91
US5818245AOct 6, 1998
Impedance measuring
DOBLE ENG35 citations90
US5541827AJul 30, 1996
Reducing switching losses in a phase-modulated switch-mode amplifier
DOBLE ENG47 citations90
US4541040ASep 10, 1985
Power converting
DOBLE ENG38 citations90
US6177803B1Jan 23, 2001
Monitoring elements in a multi-phase alternating current network
DOBLE ENG31 citations87
US5068636ANov 26, 1991
Current shunting
DOBLE ENG11 citations72
US4794507ADec 27, 1988
Controlling electrical power
DOBLE ENG18 citations72
US5287065AFeb 15, 1994
Automatic bridge balancing using controllable impedance in characterizing unknown impedance
DOBLE ENG19 citations71
US4510354AApr 9, 1985
Current tap selecting switch
DOBLE ENG2 citations60
US5021648AJun 4, 1991
Motion tranducing through conversion of linear motion to circular motion
DOBLE ENG3 citations59
US4054836AOct 18, 1977
Transformer ratio-arm bridge with improved balancing means
DOBLE ENG2 citations44