P

Inventor

MOROISHI KEIJI

SG11 patents
⚠️ This page may combine multiple inventors who share the name “MOROISHI KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HOYA CORP

8 patents
US6287429B1Sep 11, 2001

Magnetic recording medium having an improved magnetic characteristic

HOYA CORP87 citations98
US6759138B2Jul 6, 2004

Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer

HOYA CORP94 citations97
US5968679AOct 19, 1999

Magnetic recording medium and method of manufacturing the same

HOYA CORP29 citations92
US5900324AMay 4, 1999

Magnetic recording media, methods for producing the same and magnetic recorders

HOYA CORP50 citations92
US5954927ASep 21, 1999

Method of manufacturing magnetic recording medium

HOYA CORP12 citations73
US5824427AOct 20, 1998

Magnetic recording media and methods for producing the same

HOYA CORP9 citations73
US5746893AMay 5, 1998

Method of manufacturing magnetic recording medium

HOYA CORP6 citations73
US5766727AJun 16, 1998

Magnetic recording medium and method for manufacturing the same

HOYA CORP11 citations67

HOYA MAGNETICS SINGAPORE PTE

1 patent
US6916558B2Jul 12, 2005

Magnetic disk using a glass substrate

HOYA MAGNETICS SINGAPORE PTE76 citations97

WD MEDIA SINGAPORE PTE LTD

1 patent
US7993497B2Aug 9, 2011

Magnetic disk and magnetic disk manufacturing method

WD MEDIA SINGAPORE PTE LTD69 citations92

MASUMOTO TSUYOSHI

1 patent
US5100869AMar 31, 1992

Process for producing metal oxide-type superconductive material

MASUMOTO TSUYOSHI8 citations73