Inventor

IWAKURA TADAYUKI

JP18 patents

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

IWAKURA TADAYUKI

HITACHI GLOBAL STORAGE TECH

Magnetic head for reducing projection of retrieving and writing unit from float surface, and magnetic recording/retrieving apparatus using the same

Thin film magnetic head and magnetic disk apparatus including the same

Thin film magnetic head

Manufacturing method of a thin film magnetic head

Separate read/write magnetic head

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic write head including a magnetic pole piece having a protrusion

Main pole structure coupled with trailing gap for perpendicular recording

HITACHI LTD

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films

Method of fabricating thin-film magnetic head

Magnetic disc apparatus with thin film head suitable for high-density recording

HITACHI GLOBAL STORAGE TECH NL

Perpendicular recording magnetic head

Magnetic head for perpendicular recording having pole pieces provided on surface of soft magnetic film

MARUYAMA YOHJI

Perpendicular magnetic recording head having a non-magnetic film recessed from the air bearing surface for improved high-density magnetic recording

Magnetic head having write pole, first soft magnetic films separately disposed on both sides of the main pole, and a second soft magnetic film disposed on a trailing side of the main pole

HGST Netherlands BV

Perpendicular magnetic write head having a controlled magnetization state shield

HITACHI GLOBAL TECHNOLOGIES JA

Magnetic head having first and second protective films with different coefficients of linear expansion