Norikazu Tsumita

Person

Kanagawa-ken, 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 disk with surface protective layer having convex portions...
- Patent number 5,285,343
- Issue date Feb 8, 1994
- Hitachi, Ltd.
- Hideaki Tanaka
- B82 - NANO-TECHNOLOGY
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 and method of producing same
- Patent number 4,950,548
- Issue date Aug 21, 1990
- Hitachi, Ltd.
- Kenji Furusawa
- 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
- Patent number 4,833,020
- Issue date May 23, 1989
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- 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 fabrication method ther...
- Patent number 4,743,491
- Issue date May 10, 1988
- Hitachi, Ltd.
- Seiichi Asada
- G11 - INFORMATION STORAGE
Information Patent Grant
Photomask
- Patent number 4,415,262
- Issue date Nov 15, 1983
- Hitachi, Ltd.
- Naoki Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ion implanting method
- Patent number 4,404,233
- Issue date Sep 13, 1983
- Hitachi, Ltd.
- Tadashi Ikeda
- C30 - CRYSTAL GROWTH
Information Patent Grant
Magnetic bubble memory device and method of fabricating the same
- Patent number 4,344,153
- Issue date Aug 10, 1982
- Hitachi, Ltd.
- Hideki Nishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of forming a microscopic pattern
- Patent number 4,288,283
- Issue date Sep 8, 1981
- Hitachi, Ltd.
- Hiroshi Umezaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

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

Norikazu Tsumita

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 disk with surface protective layer having convex portions...

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 and method of producing same

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Perpendicular magnetic recording medium and fabrication method ther...

Photomask

Ion implanting method

Magnetic bubble memory device and method of fabricating the same

Method of forming a microscopic pattern

Patents Applicationslast 30 patents

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