Inventor

NAKAO TAKESHI

JP82 patents

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

NAKAO TAKESHI

HITACHI LTD

Multilayer magnetoresistance effect-type magnetic head

Data recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronization

Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference

Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions

Multilayer magnetoresistance effect-type magnetic head

Method of head positioning and magnetic recording disk drive using the same

Optical head and information recording apparatus

Magnetic recording data storage system

Semiconductor laser device

Optical head and apparatus for recording and reproducing optical information through the use of the optical head

Optical pickup for optical disk apparatus

Tracking method for optical disk apparatus using diffraction light

Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity

Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor

High-density magnetic recording and optical reproducing apparatus

Magnetooptical recording method and apparatus utilizing shift adjustment

Overwritable magneto-optic recording and reproducing apparatus

Optical information recording apparatus

Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect

Optical information processing apparatus and method of controlling position of optical spot and reproducing signals

Recording/reproducing optical head producing focusing error signal from zero-th order diffracted light and tracking error signal from first order diffracted light

Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium

Magneto-optical memory apparatus having a floating magnetic head

Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect

Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction

Magneto-optical recording apparatus having a magnetic slider with increased rail width

Magneto-optical recorder with compensation for variation in applied magnetic field intensity on a recording medium

Magneto-optical recorder with small-sized, low-powered electromagnetic coil

MURATA MANUFACTURING CO

Surface acoustic wave device

Surface acoustic wave device

Surface acoustic wave device and electronic device using the same

Ladder filter having edge reflection type saw resonators

Method for manufacturing a surface acoustic wave

Surface acoustic wave apparatus and manufacturing method therefor

Surface acoustic wave apparatus and manufacturing method therefor

Surface acoustic wave device

Surface acoustic wave device and electronic device using the same

Surface acoustic wave resonator, surface acoustic wave device, and communication device using shear horizontal waves

Surface acoustic wave device with specific electrode materials and quartz substrate euler angles

Surface acoustic wave device

Surface acoustic wave device and method for manufacturing the same

Surface acoustic wave device including an IDT defined by a metal filled in grooves in a piezoelectric substrate

Surface acoustic wave device

End-surface reflection type surface acoustic wave filter

Surface acoustic wave device

Surface acoustic wave device

Method for manufacturing a surface acoustic wave device using a shear horizontal type surface acoustic wave

Surface acoustic wave apparatus utilizing a leaky surface acoustic wave

Surface acoustic wave device and manufacturing method therefor

HITACHI GLOBAL STORAGE TECH

Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect