Seigi Kawarai

Person

Osaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Primer for ink-jet recording
- Patent number 9,034,939
- Issue date May 19, 2015
- Hitachi Maxell, Ltd.
- Katsuyuki Kito
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Servo signal recording method, servo signal recording apparatus, an...
- Patent number 7,701,655
- Issue date Apr 20, 2010
- Hitachi Maxell, Ltd.
- Masao Fujita
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,593,177
- Issue date Sep 22, 2009
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,545,597
- Issue date Jun 9, 2009
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,253,988
- Issue date Aug 7, 2007
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method of magnetic tape
- Patent number 7,170,709
- Issue date Jan 30, 2007
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number RE38048
- Issue date Mar 25, 2003
- Hitachi Maxell, Ltd.
- Seigi Kawarai
- 428 - Stock material or miscellaneous articles
Information Patent Grant
Magnetic tape cartridge
- Patent number 5,725,943
- Issue date Mar 10, 1998
- Hitachi Maxell, Ltd.
- Junichi Hirata
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Magnetic recording medium
- Patent number 5,532,042
- Issue date Jul 2, 1996
- Hitachi Maxell, Ltd.
- Seigi Kawarai
- G11 - INFORMATION STORAGE
Information Patent Grant
Acicular alloy magnetic powder
- Patent number 5,260,132
- Issue date Nov 9, 1993
- Hitachi Maxell, Ltd.
- Tetuya Nakazumi
- B32 - LAYERED PRODUCTS
Information Patent Grant
Acicular alloy containing magnetic recording medium
- Patent number 5,252,380
- Issue date Oct 12, 1993
- Hitachi Maxell, Ltd.
- Tetuya Nakazumi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetic recording tape containing low levels of compounds with mol...
- Patent number 5,051,319
- Issue date Sep 24, 1991
- Hitachi Maxell, Ltd.
- Sadamu Kuse
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium including magnetic metallic powder
- Patent number 5,035,947
- Issue date Jul 30, 1991
- Hitachi Maxell, Ltd.
- Seigi Kawarai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,956,220
- Issue date Sep 11, 1990
- Hitachi Maxell, Ltd.
- Toshinobu Sueyoshi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,774,147
- Issue date Sep 27, 1988
- Hitachi Maxell, Ltd.
- Sadamu Kuse
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,632,867
- Issue date Dec 30, 1986
- Hitachi Maxell, Ltd.
- Sadamu Kuse
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
PRIMER FOR INK-JET RECORDING
- Publication number 20130267627
- Publication date Oct 10, 2013
- HITACHI MAXELL, LTD.
- Katsuyuki Kito
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
SERVO SIGNAL RECORDING METHOD, SERVO SIGNAL RECORDING APPARATUS, AN...
- Publication number 20080180834
- Publication date Jul 31, 2008
- Masao FUJITA
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE
- Publication number 20070285832
- Publication date Dec 13, 2007
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE
- Publication number 20070097541
- Publication date May 3, 2007
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE
- Publication number 20070086109
- Publication date Apr 19, 2007
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic tape
- Publication number 20060068232
- Publication date Mar 30, 2006
- Hitachi Maxell, Ltd.
- Hisanobu Mikamo
- G11 - INFORMATION STORAGE
Information Patent Application
Recording/reproducing method of magnetic tape
- Publication number 20050254162
- Publication date Nov 17, 2005
- Hitachi Maxell, Ltd.
- Masao Okafuji
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and method for producing the same
- Publication number 20050170214
- Publication date Aug 4, 2005
- Hitachi Maxell, Ltd.
- Tsugihiro Doi
- G11 - INFORMATION STORAGE

Seigi Kawarai

Person

Patents Grantslast 30 patents

Primer for ink-jet recording

Servo signal recording method, servo signal recording apparatus, an...

Recording/reproducing method of magnetic tape

Recording/reproducing method of magnetic tape

Recording/reproducing method of magnetic tape

Recording/reproducing method of magnetic tape

Magnetic recording medium

Magnetic tape cartridge

Magnetic recording medium

Acicular alloy magnetic powder

Acicular alloy containing magnetic recording medium

Magnetic recording tape containing low levels of compounds with mol...

Magnetic recording medium including magnetic metallic powder

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Patents Applicationslast 30 patents

PRIMER FOR INK-JET RECORDING

SERVO SIGNAL RECORDING METHOD, SERVO SIGNAL RECORDING APPARATUS, AN...

RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE

RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE

RECORDING/REPRODUCING METHOD OF MAGNETIC TAPE

Magnetic tape

Recording/reproducing method of magnetic tape

Magnetic recording medium and method for producing the same