Inventor
SEKII YOICHI
JP63 patents
⚠️ This page may combine multiple inventors who share the name “SEKII YOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIDEC CORP
35 patentsUS6980394B2Dec 27, 2005
Spindle motor and recording disk driving device comprising the same
NIDEC CORP38 citations87
US8879204B2Nov 4, 2014
Motor and disk drive apparatus
NIDEC CORP7 citations84
US8358483B2Jan 22, 2013
Spindle motor including annular magnetic member and disk drive apparatus including such a spindle motor
NIDEC CORP6 citations84
US8873198B1Oct 28, 2014
Motor and disk drive apparatus
NIDEC CORP8 citations83
US8385017B2Feb 26, 2013
Spindle motor including fluid bearing and storage disk drive including the same
NIDEC CORP16 citations83
US8379345B2Feb 19, 2013
Spindle motor having dynamic pressure fluid bearing for use in a storage disk drive
NIDEC CORP14 citations83
US7374340B2May 20, 2008
Fluid dynamic-pressure bearing, spindle motor and recording disk driving device
NIDEC CORP7 citations74
US8797678B1Aug 5, 2014
Spindle motor and disk drive apparatus
NIDEC CORP4 citations72
US8724256B2May 13, 2014
Bearing apparatus, spindle motor, and disk drive apparatus
NIDEC CORP5 citations70
US10908413B2Feb 2, 2021
Rotary drive apparatus
NIDEC CORP0 citations63
US8941946B2Jan 27, 2015
Motor including dynamic bearing with seal portion and disk drive apparatus including the same
NIDEC CORP3 citations63
US8670209B2Mar 11, 2014
Spindle motor including a fluid dynamic bearing and disk drive apparatus with same
NIDEC CORP2 citations63
US7550887B2Jun 23, 2009
Spindle motor and method of manufacturing spindle motor
NIDEC CORP5 citations63
US11990812B2May 21, 2024
Routing structure of conductive wire, motor, resolver, and method for manufacturing electronic device
NIDEC CORP0 citations62
US11843307B2Dec 12, 2023
Motor and motor assembly
NIDEC CORP0 citations62
US11025106B2Jun 1, 2021
Stator winding for motor
NIDEC CORP1 citations62
US10318774B2Jun 11, 2019
Housing, housing unit, and casing unit
NIDEC CORP1 citations62
US8922945B2Dec 30, 2014
Disk drive spindle motor with wiring substrate having extension portion passing through opening in base
NIDEC CORP3 citations62
US8553355B2Oct 8, 2013
Spindle motor and storage disk drive
NIDEC CORP4 citations62
US8542459B2Sep 24, 2013
Spindle motor and storage disk drive
NIDEC CORP3 citations62
US8508884B2Aug 13, 2013
Spindle motor including magnetic member and disk drive apparatus including same
NIDEC CORP4 citations62
US10476329B2Nov 12, 2019
Motor including a seal covering a high reflectivity metallic surface of a rotor hub
NIDEC CORP1 citations60
US12323032B2Jun 3, 2025
Motor
NIDEC CORP0 citations59
US10177625B2Jan 8, 2019
Motor
NIDEC CORP1 citations59
US12362609B2Jul 15, 2025
Motor with an air-core coil and back yoke to reduce eddy current losses
NIDEC CORP0 citations58
US11725713B2Aug 15, 2023
Planetary gear mechanism and geared motor
NIDEC CORP0 citations52
US11627779B2Apr 18, 2023
Lacing module
NIDEC CORP0 citations52
US10559998B2Feb 11, 2020
Motor and disk drive apparatus
NIDEC CORP0 citations52
US10175475B2Jan 8, 2019
Rotary drive apparatus
NIDEC CORP0 citations52
US9837872B2Dec 5, 2017
Motor and disk drive apparatus
NIDEC CORP0 citations52
US12463490B2Nov 4, 2025
Motor module
NIDEC CORP0 citations51
US9194434B2Nov 24, 2015
Spindle motor and disk drive apparatus
NIDEC CORP1 citations51
US8873197B1Oct 28, 2014
Motor and disk drive apparatus
NIDEC CORP0 citations51
US8824097B2Sep 2, 2014
Motor and disk drive apparatus
NIDEC CORP1 citations51
US10591718B2Mar 17, 2020
Rotary drive apparatus
NIDEC CORP0 citations42
SEKII YOICHI
6 patentsUS8120872B2Feb 21, 2012
Spindle motor and disk drive apparatus
SEKII YOICHI43 citations93
US8284515B2Oct 9, 2012
Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus
SEKII YOICHI12 citations81
US8724257B2May 13, 2014
Hydrodynamic bearing apparatus and spindle motor and disk drive apparatus including the same
SEKII YOICHI17 citations79
US8284513B2Oct 9, 2012
Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus
SEKII YOICHI6 citations71
US8144423B2Mar 27, 2012
Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus
SEKII YOICHI4 citations60
US8240920B2Aug 14, 2012
Fluid dynamic bearing, motor, and recording disk drive apparatus
SEKII YOICHI1 citations51
MIZUKAMI JUNYA
2 patentsIWASAKI SHUJI
2 patentsKIMURA AKIHIRO
1 patentYAWATA ATSUSHI
1 patentTAMAOKA TAKEHITO
1 patentGOMYO MASATO
1 patentVALVE CORP
1 patentShowing the top 50 of 63 patents by PatentIndex Score.