P

Inventor

TOMIYASU HIROSHI

JP31 patents
⚠️ This page may combine multiple inventors who share the name “TOMIYASU HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HOYA CORP

9 patents
US7420886B2Sep 2, 2008

Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium

HOYA CORP70 citations97
US7220500B1May 22, 2007

Magnetic recording medium, and thermal stability measuring method and apparatus of magnetic recording medium

HOYA CORP76 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
US6852010B2Feb 8, 2005

Substrate for an information recording medium, information recording medium using the substrate, and method of producing the substrate

HOYA CORP16 citations92
US6537648B1Mar 25, 2003

Substrate for an information recording medium, information recording medium using the substrate and method of producing the substrate

HOYA CORP42 citations92
US6706427B2Mar 16, 2004

Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof

HOYA CORP17 citations89
US6790509B2Sep 14, 2004

Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium

HOYA CORP11 citations73
US7220446B2May 22, 2007

Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof

HOYA CORP0 citations49

KONISHIROKU PHOTO IND

4 patents

HOYA MAGNETICS SINGAPORE PTE

3 patents

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

3 patents

MITSUBISHI CHEM IND

3 patents

DORYOKURO KAKUNENRYO

3 patents

SANKYO DENGYO KK

2 patents

WD MEDIA SINGAPORE PTE LTD

1 patent

SUZUKI KOTA

1 patent

MITSUBISHI CHEM CORP

1 patent

SEMICONDUCTOR TECH ACAD RES CT

1 patent