Inventor

YAMASHITA TSUTOMU T

US12 patents

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

KOMAG INC

11 patents

US4786564ANov 22, 1988

Method for manufacturing a magnetic disk having reduced bit shift, minimized noise, increased resolution and uniform magnetic characteristics, and the resulting disk

KOMAG INC74 citations96

US5045165ASep 3, 1991

Method for sputtering a hydrogen-doped carbon protective film on a magnetic disk

KOMAG INC70 citations95

US5507930AApr 16, 1996

Method of sputtering a carbon protective film on a magnetic disk by superimposing an AC voltage on a DC bias voltage

KOMAG INC101 citations93

US5397644AMar 14, 1995

Magnetic disk having a sputtered hydrogen-doped carbon protective film

KOMAG INC28 citations92

US5180640AJan 19, 1993

Magnetic recording medium comprising a magnetic alloy layer of cobalt nickel, platinum and chromium formed directly on a nickel alloy amorphous underlayer

KOMAG INC36 citations92

US5153044AOct 6, 1992

Magnetic disk for longitudinal recording comprising an amorphous intermediate layer

KOMAG INC23 citations92

US4898774AFeb 6, 1990

LI TUQIANG

1 patent

US8956741B1Feb 17, 2015

Magnetic recording media with small grain size and narrow c-axis dispersion by using dual seed layer with substrate bias

LI TUQIANG7 citations79