Inventor

Kousaku Wakatsuki

Inventor

Odawara, JP

Overview

1991–2016

Patent span

Physics

Primary field (CPC G)

Patents· 15 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 transducer79%

H01LSemiconductor devices5%

H05KPrinted circuits5%

H10NElectric solid-state devices not otherwise provided for5%

Y10TTechnical subjects covered by former us classification5%

PatentTitleYear

9,449,623'Reducing ion migration in a hard disk drive microactuator flexure assembly'2016 8,351,159'Suspension for protecting a component from mechanical shock'2013 7,719,796'Suspension for hard disk drive which enables easy dynamic electric testing'2010 7,652,848'Suspension for magnetic head slider characteristic test'2010 7,489,478'Magnetic disk drive head suspension having a lift tab which engages a limiter'2009 7,460,341'Magnetic disk device and suspension having multiple arm portions of varying lengths'2008 7,130,159'Magnetic disk apparatus'2006 7,110,224'Disk drive having a two-stage actuator for suppressing a flying-height fluctuation'2006 7,009,816'Head support mechanism and magnetic disk device'2006 6,950,287'Disk drive having a two-stage actuator for suppressing a flying-height fluctuation'2005 6,927,947'Magnetic disk apparatus'2005 6,614,623'Disc drive head supporting mechanism having power supply pads for an integrated circuit which are of a greater area than signal/control junction pads'2003 6,614,627'Magnetic disk apparatus'2003 5,196,974'Rail-type floating magnetic head slider'1993 5,060,098'Magnetic recorder provided with a magnetic head slider having a non-magnetic oxide of spinel structure'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2005Patents assigned to HITACHI LTD (5)· patent assignee history

1991–1993Based in Ibaraki, JP· patent location history

2003–2016Based in Odawara, JP· patent location history

2005–2010Patents assigned to HITACHI GLOBAL STORAGE TECH (8)· patent assignee history

2008–2010Based in Kanagawa, JP· patent location history

2013–2016Patents assigned to HGST Netherlands BV (2)· patent assignee history

2013Patents assigned to HAGIYA SHINOBU (1)· patent assignee history

2013Patents assigned to HIRANO TOSHIKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI GLOBAL STORAGE TECH	8	2005–2010
HITACHI LTD	5	1991–2005
HGST Netherlands BV	2	2013–2016
HAGIYA SHINOBU	1	2013
HIRANO TOSHIKI	1	2013

Locations

Location	Patents	Span
Odawara, JP	9	2003–2016
Kanagawa, JP	4	2008–2010
Ibaraki, JP	2	1991–1993