Inventor

AYAMA KENJI

SG11 patents

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

UMEZAWA TEIICHIRO

3 patents

US8623528B2Jan 7, 2014

Method of manufacturing perpendicular magnetic recording medium and perpendicular magnetic recording medium

UMEZAWA TEIICHIRO73 citations97

US8309239B2Nov 13, 2012

Perpendicular magnetic recording medium and method of manufacturing the same

UMEZAWA TEIICHIRO69 citations97

US8142916B2Mar 27, 2012

Magnetic recording medium

UMEZAWA TEIICHIRO72 citations97

HOYA CORP

3 patents

US7537846B2May 26, 2009

Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk

HOYA CORP74 citations97

US6759138B2Jul 6, 2004

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

HOYA CORP94 citations97

US6670055B2Dec 30, 2003

Magnetic recording medium and manufacturing method therefor

HOYA CORP87 citations97

AYAMA KENJI

2 patents

US8057926B2Nov 15, 2011

Perpendicular magnetic recording medium

AYAMA KENJI70 citations96

US8795857B2Aug 5, 2014

Perpendicular magnetic recording medium and manufacturing method of the same

AYAMA KENJI51 citations93

WD MEDIA SINGAPORE PTE LTD

1 patent

US8383209B2Feb 26, 2013

Magnetic recording medium manufacturing method and laminate manufacturing method

WD MEDIA SINGAPORE PTE LTD70 citations97

ISHIYAMA MASAFUMI

1 patent

US8092931B2Jan 10, 2012

Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk

ISHIYAMA MASAFUMI70 citations96

SAKAMOTO KAZUAKI

1 patent

US9159351B2Oct 13, 2015

Perpendicular magnetic recording medium and method of manufacturing the same

SAKAMOTO KAZUAKI3 citations60