Inventor

AOYAMA SEIKI

JP23 patents

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

AOYAMA SEIKI

DENSO CORP

Method for manufacturing semiconductor dynamic quantity sensor

Method for manufacturing semiconductor dynamic quantity sensor

Temperature-compensating amplification circuit and a position detecting apparatus using such amplification circuit

Oscillator circuit having stable frequency

Capacitive physical quantity sensor

Rotation detector using magnetoresistance element positioned in vicinity of outer peripheral edge of toothed gear

Semiconductor physical quantity sensor

Dynamic quantity sensor having movable and fixed electrodes with high rigidity

Side collision detecting apparatus for vehicle

Physical quantity sensor

Switched-capacitor low-pass filter and semiconductor pressure sensor apparatus incorporating the filter

Switched capacitor filter circuit and method of fabricating the same

EPROM circuit with error correction

Compact structure of automatic gain control circuit

NIPPON DENSO CO

Magnetic detection device having a magnet including a stepped portion for eliminating turbulence at the MR sensor

Position detector including a reference position wherein the sensor is saturating the MR sensor for preventing hysteresis and in a bridge circuit

Magnetic gear rotation sensor

MRE sensor signal detector

Pulse phase difference encoding circuit

Magnetoresistive type position sensor having bias magnetic and magnet resistance elements in bias magnetic field thereof

Magnetic detector having a bias magnet and magnetoresistive elements shifted away from the center of the magnet

Displacement detecting device

Physical quantity change detection device which detects change by detecting a phase difference between two pulses