Inventor
KOYANAGI NAOHISA
JP10 patents
⚠️ This page may combine multiple inventors who share the name “KOYANAGI NAOHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO PARTS KOGYO KK
9 patentsUS6326711B1Dec 4, 2001
DC brushless motor having eccentric rotor
TOKYO PARTS KOGYO KK56 citations95
US6762518B1Jul 13, 2004
Flat core brushless motor
TOKYO PARTS KOGYO KK22 citations92
US5373207ADec 13, 1994
Brushless vibrator motor for a wireless silent alerting device
TOKYO PARTS KOGYO KK48 citations92
US5341057AAug 23, 1994
Vibrator motor for a wireless silent alerting device
TOKYO PARTS KOGYO KK31 citations92
US6380651B1Apr 30, 2002
Brushless motor having resin bearing
TOKYO PARTS KOGYO KK19 citations84
US6909206B2Jun 21, 2005
Flat rotor and motor comprising the same
TOKYO PARTS KOGYO KK12 citations83
US6765331B2Jul 20, 2004
Eccentric rotor having high density member, manufacturing method thereof, and flat coreless vibrator motor using the eccentric rotor
TOKYO PARTS KOGYO KK16 citations81
US6853109B2Feb 8, 2005
Axially sliding contact type of a commutator, a rotor including the commutator, and an electric motor having the rotor
TOKYO PARTS KOGYO KK7 citations70
US7088022B2Aug 8, 2006
Axial air-gap vibration motor
TOKYO PARTS KOGYO KK4 citations61