Inventor · disambiguated record
Naohisa Koyanagi
Also filed as: KOYANAGI NAOHISA
10 granted patents·2 pending applications·218 citations·filing 1993–2010
91Inventor score
Top patents by PatentIndex Score
12 records- 0183US6326711B1DC brushless motor having eccentric rotorTOKYO PARTS KOGYO KK·Filed 1999·Granted Dec 4, 2001·56 cites·9 claims
- 0282US6380651B1Brushless motor having resin bearingTOKYO PARTS KOGYO KK·Filed 2000·Granted Apr 30, 2002·19 cites·8 claims
- 0381US5373207ABrushless vibrator motor for a wireless silent alerting deviceTOKYO PARTS KOGYO KK·Filed 1993·Granted Dec 13, 1994·48 cites·6 claims
- 0477US6762518B1Flat core brushless motorTOKYO PARTS KOGYO KK·Filed 2000·Granted Jul 13, 2004·22 cites·3 claims
- 0572US5341057AVibrator motor for a wireless silent alerting deviceTOKYO PARTS KOGYO KK·Filed 1993·Granted Aug 23, 1994·31 cites·4 claims
- 0668US8334627B2Compact motorKOYANAGI NAOHISA·Filed 2010·Granted Dec 18, 2012·3 cites·4 claims
- 0767US6765331B2Eccentric rotor having high density member, manufacturing method thereof, and flat coreless vibrator motor using the eccentric rotorTOKYO PARTS KOGYO KK·Filed 2002·Granted Jul 20, 2004·16 cites·20 claims
- 0859US6909206B2Flat rotor and motor comprising the sameTOKYO PARTS KOGYO KK·Filed 2004·Granted Jun 21, 2005·12 cites·20 claims
- 0950US6853109B2Axially sliding contact type of a commutator, a rotor including the commutator, and an electric motor having the rotorTOKYO PARTS KOGYO KK·Filed 2003·Granted Feb 8, 2005·7 cites·17 claims
- 1048US2006028077A1Flat vibration brushless motorYAMAGUCHI TADAO·Filed 2005·Application pending·0 cites
- 1148US2006091747A1Magnetic sound transducer containing flat vibration motorYAMAGUCHI TADAO·Filed 2005·Application pending·0 cites
- 1247US7088022B2Axial air-gap vibration motorTOKYO PARTS KOGYO KK·Filed 2003·Granted Aug 8, 2006·4 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →