Assignee
ROTRON INC
18 patents
Top patents by PatentIndex Score
US4089618AMay 16, 1978
Fan with noise reduction
ROTRON INC152 citations97
US4553075ANov 12, 1985
Simple brushless DC fan motor with reversing field
ROTRON INC85 citations94
US4633110ADec 30, 1986
Motor with stator on printed circuit assembly
ROTRON INC78 citations93
US4438362AMar 20, 1984
Self-starting, direct current motor with permanent magnets of varied magnetic strength
ROTRON INC40 citations93
US4365187ADec 21, 1982
Brushless D.C. motor
ROTRON INC42 citations90
US4563622AJan 7, 1986
Simple brushless DC fan motor
ROTRON INC63 citations87
US5656494AAug 12, 1997
Biofilter with modular trays
ROTRON INC39 citations86
US5595910AJan 21, 1997
Biofilter with modular trays
ROTRON INC26 citations86
US4618806AOct 21, 1986
Ironless, brushless DC motor with wave-winding
ROTRON INC57 citations85
US5546295AAug 13, 1996
Electrical power converter, power supply, and inverter with series-connected switching circuits
ROTRON INC37 citations83
US4845411AJul 4, 1989
Brushless DC motor and encoding technique
ROTRON INC21 citations82
US4494028AJan 15, 1985
Integral coaxial commutation and rotor magnets and apparatus and method for making same
ROTRON INC20 citations82
US4484114ANov 20, 1984
Self-starting brushless DC motor
ROTRON INC34 citations81
US6453504B1Sep 24, 2002
Power driven wiper system for outside vehicle mirrors
ROTRON INC33 citations80
US5117167AMay 26, 1992
Commutating energy suppression circuit for an electronically commutated DC motor
ROTRON INC25 citations80
US4506218AMar 19, 1985
Condition sensing arrangement for ac machines
ROTRON INC24 citations80
US4542768ASep 24, 1985
Pressure relief valve
ROTRON INC22 citations69
US4564793AJan 14, 1986
Brushless DC motor with improved starting
ROTRON INC8 citations66