Masayoshi Nakagawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Lens for light communication
- Patent number D630666
- Issue date Jan 11, 2011
- Alps Electric Co., Ltd.
- Tsuyoshi Matsumoto
- D16 - Photography and optical equipment
Information Patent Grant
Magnetic head device
- Patent number 7,499,246
- Issue date Mar 3, 2009
- TDK Corporation
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic-head apparatus with microactuator having function of short...
- Patent number 7,423,846
- Issue date Sep 9, 2008
- TDK Corporation
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head actuator having finely movable tracking device
- Patent number 7,167,344
- Issue date Jan 23, 2007
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head apparatus with microactuator having function of short...
- Patent number 6,987,649
- Issue date Jan 17, 2006
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of manufacturing a magnetic head
- Patent number 6,971,155
- Issue date Dec 6, 2005
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head actuator having finely movable tracking device
- Patent number 6,798,619
- Issue date Sep 28, 2004
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
Information Patent Grant
Magnetic head device with microactuator fine motion device having e...
- Patent number 6,791,783
- Issue date Sep 14, 2004
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Microactuator-mounted magnetic head device with control conductive...
- Patent number 6,707,645
- Issue date Mar 16, 2004
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording device having first actuator for coarse adjustme...
- Patent number 6,577,464
- Issue date Jun 10, 2003
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk on which servo pattern is recorded and arithmetic processing m...
- Patent number 6,469,852
- Issue date Oct 22, 2002
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Adjustment apparatus for magnetic head device
- Patent number 6,317,295
- Issue date Nov 13, 2001
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Driving device for polyphase motor
- Patent number 6,218,750
- Issue date Apr 17, 2001
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Disk provided with servo patterns and method of recording servo pat...
- Patent number 6,154,330
- Issue date Nov 28, 2000
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium formed in a plurality of tracks and magne...
- Patent number 5,966,259
- Issue date Oct 12, 1999
- Alps Electric Co., Ltd.
- Tetsuya Mitsuishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo information writing system
- Patent number 5,963,391
- Issue date Oct 5, 1999
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
COLLIMATOR LENS
- Publication number 20120002297
- Publication date Jan 5, 2012
- Hiroshi Kameda
- G02 - OPTICS
Information Patent Application
Slider, magnetic head assembly and manufacturing the same
- Publication number 20060221501
- Publication date Oct 5, 2006
- Alps Electric Co., Ltd.
- Toshihiko Sato
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic-head apparatus with microactuator having function of short...
- Publication number 20060039085
- Publication date Feb 23, 2006
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head device
- Publication number 20050270701
- Publication date Dec 8, 2005
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head capable of being reworked and reassembled and method...
- Publication number 20020186509
- Publication date Dec 12, 2002
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Magnetic head device with microactuator fine motion device having e...
- Publication number 20020171968
- Publication date Nov 21, 2002
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head apparatus with microactuator having function of short...
- Publication number 20020145831
- Publication date Oct 10, 2002
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head actuator having finely movable tracking device
- Publication number 20020089793
- Publication date Jul 11, 2002
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Application
Microactuator-mounted magnetic head device
- Publication number 20020006016
- Publication date Jan 17, 2002
- Alps Electric Co., Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording device having first actuator for coarse adjustme...
- Publication number 20010015866
- Publication date Aug 23, 2001
- Alps Electric Co. Ltd.
- Masayoshi Nakagawa
- G11 - INFORMATION STORAGE

Masayoshi Nakagawa

Person

Patents Grantslast 30 patents

Lens for light communication

Magnetic head device

Magnetic-head apparatus with microactuator having function of short...

Magnetic head actuator having finely movable tracking device

Magnetic head apparatus with microactuator having function of short...

Method of manufacturing a magnetic head

Magnetic head actuator having finely movable tracking device

Magnetic head device with microactuator fine motion device having e...

Microactuator-mounted magnetic head device with control conductive...

Magnetic recording device having first actuator for coarse adjustme...

Disk on which servo pattern is recorded and arithmetic processing m...

Adjustment apparatus for magnetic head device

Driving device for polyphase motor

Disk provided with servo patterns and method of recording servo pat...

Magnetic recording medium formed in a plurality of tracks and magne...

Servo information writing system

Patents Applicationslast 30 patents

COLLIMATOR LENS

Slider, magnetic head assembly and manufacturing the same

Magnetic-head apparatus with microactuator having function of short...

Magnetic head device

Magnetic head capable of being reworked and reassembled and method...

Magnetic head device with microactuator fine motion device having e...

Magnetic head apparatus with microactuator having function of short...

Magnetic head actuator having finely movable tracking device

Microactuator-mounted magnetic head device

Magnetic recording device having first actuator for coarse adjustme...