LexDanaLexDanabeta
Inventor

Masafumi Mochizuki

Inventor
Kanagawa, JP

Overview

76→
Patents
1982–2016
Patent span
Physics
Primary field (CPC G)

Patents· 76 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer77%
Y10TTechnical subjects covered by former us classification10%
B82YSpecific uses or applications of nanostructures8%
LOCD12%
C21CProcessing of pig-iron, e.g. refining, manufacture of wrought-iron or steel1%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests1%
PatentTitleYear
9,305,586'Microwave-assisted magnetic recording device and method of formation thereof'20169,099,127'Dual magnetic sensor for multi-input magnetic recording'20158,976,484'Magnetic recording with tilted media in the cross track direction'20158,861,116'Track pitch variation measurement method using spiral DC pattern writing'20148,830,635'Magnetic head having shield layer(s) with low coefficient of thermal expansion and magnetic storage apparatus having same'20148,817,406'Magnetic-recording head with touch-down detector incorporating a carbon nano-tube'20148,792,210'Asymmetric writer for shingled magnetic recording'20148,786,984'Perpendicular magnetic write head having a current carrying element for in-plane field assisted magnetic recording'20148,760,801'Magnetic head having a planar hall effect read sensor'20148,717,708'Magnetic head and magnetic disk apparatus'20148,634,163'Dual reverse microwave assisted magnetic recording (MAMR) and systems thereof'20148,630,064'Magnetic write head with novel shield structure having latterally extending trailing gap layer and concaved side gap'20148,472,139'Shingled magnetic recording (SMR) head with bent trailing shield and methods of production thereof'20138,411,384'Writer having a shield structure for adjacent and far track interference refreshment'20138,373,940'Magnetic head having a facing electrode pair for generating an electromagnetic field and applying energy to the magnetic recording layer'20138,363,355'Microwave-assisted magnetic recording device and method of formation thereof'20138,339,749'Perpendicular magnetic recording head, magnetic head, and magnetic disk device mounted with these heads'20128,310,786'Asymmetric writer for shingled magnetic recording'20128,270,111'Perpendicular magnetic recording head'20128,254,061'Head-slider with protrusion control structure and manufacturing method of the head-slider with protrusion control structure'20128,248,893'Energy-assisted magnetic-recording head having a magnetic-recording assistance element disposed to lower magnetic-recording field for reversing magnetization in a magnetic-recording disk'20128,225,486'Method of manufacturing a perpendicular magnetic recording head'20128,223,458'Magnetic head having an asymmetrical shape and systems thereof'20128,203,803'Magnetic recording head for perpendicular recording with wrap around shield, the fabrication process and magnetic disk storage apparatus mounting the magnetic head'20128,107,180'Hard-disk drive and control method for magnetic recording on a patterned medium of the hard-disk drive'20128,085,499'Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it'20118,018,672'Magnetic recording device and magnetic recording method thereof'20118,000,058'Magnetic head for perpendicular recording having pole pieces provided on surface of soft magnetic film'20117,990,653'Perpendicular recording magnetic head with a main magnetic pole piece and an auxiliary magnetic pole piece'20117,969,678'Magnetic disk drive having assisted recording and methods of recording data thereto'20117,944,646'Magnetic disk drive'20117,881,012'Magnetic head and magnetic disk storage apparatus mounting the head'20117,848,053'Magnetic head and magnetic disk storage apparatus mounting the head'20107,813,079'Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it'20107,715,152'Magnetic recording head for perpendicular recording, fabrication process, and magnetic disk storage apparatus mounting the magnetic head'20107,684,149'Magnetic head and magnetic disk storage apparatus mounting the same'20107,646,564'Perpendicular magnetic recording head for high frequency drive'20107,639,452'Magnetic head for perpendicular recording and fabrication process'20097,616,403'Winged design for reducing corner stray magnetic fields'20097,606,006'Magnetic recording head and magnetic disk storage apparatus mounting the magnetic head'20097,545,595'Magnetic disk apparatus having an adjustable mechanism to compensate write or heat element for off-tracking position with yaw angle'20097,542,244'Magnetic head to prevent undesired data erasure and magnetic disk storage having the same'20097,532,433'Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it'20097,483,243'Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same'20097,475,470'Method for manufacturing a magnetic head for perpendicular recording'20097,450,349'Magnetic head with soft magnetic shield and magnetic storage'20087,426,092'Magnetic head and magnetic disk storage apparatus mounting the head'20087,370,405'Fabrication method of a high gradient-field recording head for perpendicular magnetic recording'20087,221,538'Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it'20077,213,195'Data decoding method and circuit and information recording and reproducing apparatus using the same'20077,180,704'Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head'20077,088,548'Perpendicular magnetic recording system'20067,054,105'Magnetic recording head for perpendicular recording and including a portion protruding toward a mail pole and magnetic disc storage apparatus mounting the magnetic head'20067,038,881'Magnetic head for perpendicular recording including a main pole having a pole tip with three tapered sides'20067,031,108'Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head'20067,027,248'Magnetic disk apparatus having an adjustable mechanism to compensate write or heat element for off-tracking position with yaw angle'20067,024,617'Data decoding method and circuit and information recording and reproducing apparatus using the same'20066,995,949'Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same'20066,952,380'Apparatus and method for recording information'20056,891,697'Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same'20056,813,116'Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same'20046,775,099'High gradient-field recording head for perpendicular magnetic recording'20046,741,421'Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head'20046,710,972'Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head'20046,710,973'Single pole type recording head including tapered edges'20046,657,813'Perpendicular magnetic recording system'20034,488,286'Signal-pickup cartridge for a rotary recording medium reproducing apparatus'19844,433,406'Rotary recording medium clamping mechanism'19844,433,405'Rotary recording medium reproducing apparatus having a mechanism for connecting a lid member to a jacket'19844,419,709'Case for a disc-shaped recording medium'1983D0271688'Pre-recorded cartridge video/audio disk'19834,384,352'Rotary recording medium reproducing apparatus'19834,380,780'Disc-shaped recording medium reproducing apparatus'1983D0267714'Pre-recorded cartridge video/audio disk'19834,360,845'Case for a disc-shaped recording medium'19824,352,174'Disc-shaped recording medium reproducing apparatus'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2006Patents assigned to HITACHI LTD (12)· patent assignee history
2003–2009Based in Kokubunji, JP· patent location history
2006–2011Patents assigned to HITACHI GLOBAL STORAGE TECH (23)· patent assignee history
2006–2011Based in Koganei, JP· patent location history
2008–2012Based in Tokyo, JP· patent location history
2010–2013Patents assigned to HITACHI GLOBAL STORAGE TECH NL (15)· patent assignee history
2011–2014Patents assigned to MOCHIZUKI MASAFUMI (23)· patent assignee history
2011–2014Based in Kanagawa, JP· patent location history
2012–2016Patents assigned to HGST Netherlands BV (15)· patent assignee history
2013–2016Based in Chigasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI GLOBAL STORAGE TECH232006–2011
MOCHIZUKI MASAFUMIself232011–2014
HGST Netherlands BV152012–2016
HITACHI GLOBAL STORAGE TECH NL152010–2013
HITACHI LTD122003–2006
Locations
LocationPatentsSpan
Kanagawa, JP162011–2014
Kokubunji, JP162003–2009
Tokyo, JP142008–2012
Chigasaki, JP112013–2016
Koganei, JP92006–2011