Inventor

SUMI SHIGEHARU

JP22 patents

⚠️ This page may combine multiple inventors who share the name “SUMI SHIGEHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUMI SHIGEHARU

NIDEC CORP

Spindle motor

Fluid dynamic pressure bearing and spindle motor

Fluid seal and bearing with same

Technique for filling bearing clearance of fluid-dynamic-pressure bearing unit with oil

Winding machine and method of manufacturing coil

Manufacturing method of wire rod, manufacturing apparatus of wire rod, wire rod, and motor

Coil manufacturing method, coil manufacturing device, coil, and motor

Stator and motor

Fluid dynamic pressure bearing and spindle motor

Hydrodynamic bearing, method of manufacturing the same, method of manufacturing shaft member for hydrodynamic bearing, spindle motor, and recording disk driving apparatus

Coil with contour shape, stator, and motor having same

Method of manufacturing coil and method of manufacturing motor

Motor armature and motor

Spindle motor and disk drive apparatus

Spindle motor and recording disk driving apparatus having the spindle motor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Tuning demodulator for digitally modulated RF signals

High-frequency device

Tuner for PSK or PAM data applications

Phase-locked oscillator with phase lock detection circuit

PANASONIC IP MAN CO LTD

Proximity alarm device, proximity alarm system, mobile device, and method for diagnosing failure of proximity alarm system

Acoustic device, acoustic system, moving body device, and malfunction diagnosis method for acoustic system

HORI MASAHARU

Fluid dynamic bearing device