Inventor

Masahide Yatsu

Inventor

Akishima, JP

Overview

1997–2012

Patent span

Physics

Primary field (CPC G)

Patents· 26 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 transducer100%

PatentTitleYear

8,315,008'Magnetic disk device and head position control method'2012 8,300,351'Magnetic recording apparatus'2012 7,855,850'Method and apparatus for head positioning using spiral servo patterns in a disk drive'2010 7,804,659'Method and apparatus for positioning head using spiral servo pattern in a disk drive'2010 7,710,682'Method and apparatus for writing spiral servo pattern in a disk drive'2010 7,675,705'Method and apparatus for writing servo pattern using spiral pattern in disk drive'2010 7,630,161'Method and apparatus for writing spiral servo pattern in a disk drive'2009 7,538,965'Method and apparatus for writing servo management information in a disk drive'2009 7,489,468'Method and apparatus for head positioning control in a disk drive'2009 7,477,472'Method and apparatus for writing servo data in a disk drive using spiral servo patterns'2009 7,457,074'Method and apparatus for correcting errors while writing spiral servo information in a disk drive'2008 7,423,835'Method and apparatus for servo control using spiral servo information in a disk drive'2008 7,312,946'Method and apparatus for servo control in a disk drive'2007 7,239,472'Method and apparatus for writing data in a disk drive'2007 7,221,533'Method and apparatus for servo information writing in a disk drive'2007 7,173,789'Head position calculation method in magnetic disc apparatus'2007 7,106,545'Method and apparatus for servowriting in a disk drive'2006 6,943,977'Method and apparatus for servo writing in a disk drive'2005 6,771,455'Control system and control method for positioning a head above a desired position on disk'2004 6,738,215'Method and system for accurate self-servo writing by using relative position between head and writing surface'2004 6,417,983'System for head positioning control in a disk drive'2002 6,175,465'Head positioning control system for use in a disk storage drive'2001 6,002,544'Head positioning control system for use in a disk drive using different target velocity data for read and write seeks'1999 5,801,897'Head positioning control system for use in a disk storage system'1998 5,754,358'Head positioning system and method for use in disk recording/reproducing apparatus'1998 5,680,271'Control device of the disk apparatus for positioning a head on a disk'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2012Patents assigned to TOSHIBA KK (26)· patent assignee history

1997–2012Based in Tokyo, JP· patent location history

2002–2012Based in Akishima, JP· patent location history

2012Patents assigned to YATSU MASAHIDE (2)· patent assignee history

2012Patents assigned to IWASHIRO MASAFUMI (1)· patent assignee history

2012Patents assigned to KUBOTA HIROSHI (1)· patent assignee history

2012Patents assigned to SUZUKI ATSUSHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOSHIBA KK	26	1997–2012
YATSU MASAHIDEself	2	2012
IWASHIRO MASAFUMI	1	2012
KUBOTA HIROSHI	1	2012
SUZUKI ATSUSHI	1	2012

Locations

Location	Patents	Span
Akishima, JP	19	2002–2012
Tokyo, JP	7	1997–2012