Juichi Morikawa

Person

Tottori, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Communication device
- Patent number 5,825,853
- Issue date Oct 20, 1998
- Hitachi, Ltd.
- Noboru Kojima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio signal storing apparatus having a function for converting spe...
- Patent number 5,717,818
- Issue date Feb 10, 1998
- Hitachi, Ltd.
- Yoshito Nejime
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Coil assembly for rotary magnetic head apparatus
- Patent number 5,363,263
- Issue date Nov 8, 1994
- Hitachi Ltd.
- Toshio Ohji
- G11 - INFORMATION STORAGE
Information Patent Grant
Helical scan type magnetic recording and/or reproducing apparatus h...
- Patent number 5,193,045
- Issue date Mar 9, 1993
- Hitachi, Ltd.
- Masanori Kochi
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotary magnetic head device with rotary transformer having high cou...
- Patent number 5,126,906
- Issue date Jun 30, 1992
- Hitachi, Ltd.
- Toshio Ohji
- G11 - INFORMATION STORAGE
Information Patent Grant
Multiplex rotating magnetic head system for multiply recording and...
- Patent number 5,057,944
- Issue date Oct 15, 1991
- Hitachi, Ltd.
- Shinji Ozaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Hydrodynamic grooved bearing device
- Patent number 4,961,122
- Issue date Oct 2, 1990
- Hitachi, Ltd.
- Kazuo Sakai
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Jitter reducing tapered rotary drum for magnetic head apparatus
- Patent number 4,959,743
- Issue date Sep 25, 1990
- Hitachi, Ltd.
- Mashanori Kochi
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotary magnetic head cylinder device for suppressing vibrations ofa...
- Patent number 4,833,562
- Issue date May 23, 1989
- Hitachi Ltd.
- Masanori Kochi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having improved track width narrowing grooves
- Patent number 4,803,338
- Issue date Feb 7, 1989
- Hitachi, Ltd.
- Noriyuki Kumasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having layers of amorphous magnetic alloy bonded toge...
- Patent number 4,794,483
- Issue date Dec 27, 1988
- Hitachi, Ltd.
- Takashi Naitoh
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Composite type magnetic head with non-magnetic member in coil mount...
- Patent number 4,745,507
- Issue date May 17, 1988
- Hitachi, Ltd.
- Shigekazu Otomo
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproducing system with composite magnetic head
- Patent number 4,731,683
- Issue date Mar 15, 1988
- Hitachi, Ltd.
- Shigekazu Otomo
- G11 - INFORMATION STORAGE
Information Patent Grant
Hall element
- Patent number 4,223,292
- Issue date Sep 16, 1980
- Hitachi, Ltd.
- Juichi Morikawa
- H01 - BASIC ELECTRIC ELEMENTS

Juichi Morikawa

Person

Patents Grantslast 30 patents

Communication device

Audio signal storing apparatus having a function for converting spe...

Coil assembly for rotary magnetic head apparatus

Helical scan type magnetic recording and/or reproducing apparatus h...

Rotary magnetic head device with rotary transformer having high cou...

Multiplex rotating magnetic head system for multiply recording and...

Hydrodynamic grooved bearing device

Jitter reducing tapered rotary drum for magnetic head apparatus

Rotary magnetic head cylinder device for suppressing vibrations ofa...

Magnetic head having improved track width narrowing grooves

Magnetic head having layers of amorphous magnetic alloy bonded toge...

Composite type magnetic head with non-magnetic member in coil mount...

Magnetic recording and reproducing system with composite magnetic head

Hall element