Sadao Hishiyama

Person

Sayama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording media for longitudinal recording, process for pr...
- Patent number 6,627,253
- Issue date Sep 30, 2003
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media for longitudinal recording
- Patent number 6,335,103
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media for longitudinal recording
- Patent number 6,010,794
- Issue date Jan 4, 2000
- Hitachi, Ltd.
- Hiroyuki Suzuki
Information Patent Grant
Magnetic recording media for longitudinal recording
- Patent number 5,665,478
- Issue date Sep 9, 1997
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium, method for its production, and system fo...
- Patent number 5,605,733
- Issue date Feb 25, 1997
- Hitachi, Ltd.
- Akira Ishikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic storage
- Patent number 5,236,791
- Issue date Aug 17, 1993
- Hitachi, Ltd.
- Yotsuo Yahisa
- G11 - INFORMATION STORAGE
Information Patent Grant
Longitudinal magnetic recording media and magnetic memory units
- Patent number 5,147,732
- Issue date Sep 15, 1992
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media for longitudinal recording, process for pr...
- Patent number 5,143,794
- Issue date Sep 1, 1992
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,939,045
- Issue date Jul 3, 1990
- Hitachi, Ltd.
- Kazuetsu Yoshida
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,883,711
- Issue date Nov 28, 1989
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and process for producing the same
- Patent number 4,842,917
- Issue date Jun 27, 1989
- Hitachi, Ltd.
- Tomoyuki Ohno
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,833,020
- Issue date May 23, 1989
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media for longitudinal recording
- Patent number 4,792,497
- Issue date Dec 20, 1988
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,786,553
- Issue date Nov 22, 1988
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and manufacturing method th...
- Patent number 4,621,030
- Issue date Nov 4, 1986
- Hitachi, Ltd.
- Yasutaro Uesaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium
- Patent number 4,544,591
- Issue date Oct 1, 1985
- Hitachi, Ltd.
- Yasutaro Uesaka
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic recording media for longitudinal recording, process for pr...
- Publication number 20010053458
- Publication date Dec 20, 2001
- Hitachi, Ltd.
- Hiroyuki Suzuki
- G11 - INFORMATION STORAGE

Sadao Hishiyama

Person

Patents Grantslast 30 patents

Magnetic recording media for longitudinal recording, process for pr...

Magnetic recording media for longitudinal recording

Magnetic recording media for longitudinal recording

Magnetic recording media for longitudinal recording

Magnetic recording medium, method for its production, and system fo...

Magnetic recording medium and magnetic storage

Longitudinal magnetic recording media and magnetic memory units

Magnetic recording media for longitudinal recording, process for pr...

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium and process for producing the same

Magnetic recording medium

Magnetic recording media for longitudinal recording

Magnetic recording medium

Perpendicular magnetic recording medium and manufacturing method th...

Perpendicular magnetic recording medium

Patents Applicationslast 30 patents

Magnetic recording media for longitudinal recording, process for pr...