Yatsu; Masahide

Patent Applications and Registrations

Patent applications and USPTO patent grants for Yatsu; Masahide.The latest application filed is for "magnetic recording apparatus".

Company Profile

0.26.26

Yatsu; Masahide - Tokyo JP
Yatsu; Masahide - Akishima JP
YATSU; Masahide - Akishima-shi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Magnetic disk device and head position control method Grant 8,315,008 - Suzuki , et al. November 20, 2	2012-11-20
Magnetic recording apparatus Grant 8,300,351 - Suzuki , et al. October 30, 2	2012-10-30
Magnetic Recording Apparatus App 20110317308 - SUZUKI; Hiroyuki ; et al.	2011-12-29
Magnetic Disk Device And Head Position Control Method App 20110310506 - SUZUKI; Atsushi ; et al.	2011-12-22
Method and apparatus for head positioning using spiral servo patterns in a disk drive Grant 7,855,850 - Matsunaga , et al. December 21, 2	2010-12-21
Method and apparatus for positioning head using spiral servo pattern in a disk drive Grant 7,804,659 - Matsunaga , et al. September 28, 2	2010-09-28
Method and apparatus for writing spiral servo pattern in a disk drive Grant 7,710,682 - Mizukoshi , et al. May 4, 2	2010-05-04
Method and apparatus for writing servo pattern using spiral pattern in disk drive Grant 7,675,705 - Mizukoshi , et al. March 9, 2	2010-03-09
Method and apparatus for writing spiral servo pattern in a disk drive Grant 7,630,161 - Nakajima , et al. December 8, 2	2009-12-08
Method and apparatus for writing servo management information in a disk drive Grant 7,538,965 - Ueda , et al. May 26, 2	2009-05-26
Method and apparatus for head positioning control in a disk drive Grant 7,489,468 - Ohinata , et al. February 10, 2	2009-02-10
Method and apparatus for writing servo data in a disk drive using spiral servo patterns Grant 7,477,472 - Sado , et al. January 13, 2	2009-01-13
Method And Apparatus For Head Positioning Using Spiral Servo Patterns In A Disk Drive App 20090002871 - Matsunaga; Toshitaka ; et al.	2009-01-01
Method and apparatus for correcting errors while writing spiral servo information in a disk drive Grant 7,457,074 - Sado , et al. November 25, 2	2008-11-25
Method and apparatus for servo control using spiral servo information in a disk drive Grant 7,423,835 - Sado , et al. September 9, 2	2008-09-09
Method And Apparatus For Writing Spiral Servo Pattern In A Disk Drive App 20080151409 - Mizukoshi; Seiji ; et al.	2008-06-26
Method And Apparatus For Writing Spiral Servo Pattern In A Disk Drive App 20080151412 - Nakajima; Shouji ; et al.	2008-06-26
Method And Apparatus For Positioning Head Using Spiral Servo Pattern In A Disk Drive App 20080151414 - Matsunaga; Toshitaka ; et al.	2008-06-26
Method And Apparatus For Writing Servo Pattern Using Spiral Pattern In Disk Drive App 20080151413 - Mizukoshi; Seiji ; et al.	2008-06-26
Method and apparatus for testing servo data on a disk medium in a disk drive App 20080137226 - Ueda; Katsuki ; et al.	2008-06-12
Method and apparatus for writing servo data in a disk drive using spiral servo patterns App 20080130160 - Sado; Hideo ; et al.	2008-06-05
Method and apparatus for writing servo data and positioning head in a disk drive App 20080068740 - Kouhara; Shinichirou ; et al.	2008-03-20
Method and apparatus for writing a spiral servo pattern on a disk in a disk drive App 20080002279 - Kouhara; Shinichirou ; et al.	2008-01-03
Method and apparatus for writing servo management information in a disk drive App 20080002278 - Ueda; Katsuki ; et al.	2008-01-03
Method and apparatus for servo control in a disk drive Grant 7,312,946 - Asakura , et al. December 25, 2	2007-12-25
Method and apparatus for writing servo information in a disk drive App 20070223131 - Sado; Hideo ; et al.	2007-09-27
Method and apparatus for writing data in a disk drive Grant 7,239,472 - Sado , et al. July 3, 2	2007-07-03
Method and apparatus for head positioning control in a disk drive App 20070139811 - Ohinata; Yusuke ; et al.	2007-06-21
Method and apparatus for servo information writing in a disk drive Grant 7,221,533 - Iwashiro , et al. May 22, 2	2007-05-22
Method and apparatus for servo control using spiral servo information in a disk drive App 20070097539 - Sado; Hideo ; et al.	2007-05-03
Method and apparatus for writing servo information App 20070047132 - Sado; Hideo ; et al.	2007-03-01
Head position calculation method in magnetic disc apparatus Grant 7,173,789 - Kouhara , et al. February 6, 2	2007-02-06
Method and apparatus for servo control in a disk drive App 20060245105 - Asakura; Makoto ; et al.	2006-11-02
Head position calculation method in magnetic disc apparatus App 20060221491 - Kouhara; Shinichirou ; et al.	2006-10-05
Method and apparatus for writing data in a disk drive App 20060209452 - Sado; Hideo ; et al.	2006-09-21
Method and apparatus for servowriting in a disk drive Grant 7,106,545 - Yatsu September 12, 2	2006-09-12
Method and apparatus for servo information writing in a disk drive App 20060114599 - Iwashiro; Masafumi ; et al.	2006-06-01
Method and apparatus for servo writing with servo pattern examination in a disk drive App 20060109583 - Sado; Hideo ; et al.	2006-05-25
Method and apparatus for servo writing in a disk drive Grant 6,943,977 - Yatsu September 13, 2	2005-09-13
Method and apparatus for servowriting in a disk drive App 20050141125 - Yatsu, Masahide	2005-06-30
Method and apparatus for servo writing using incorporated servo writer in a disk drive App 20040264031 - Yatsu, Masahide	2004-12-30
Control system and control method for positioning a head above a desired position on disk Grant 6,771,455 - Yatsu August 3, 2	2004-08-03
Method and system for accurate self-servo writing by using relative position between head and writing surface Grant 6,738,215 - Yatsu May 18, 2	2004-05-18
Method and apparatus for servo writing in a disk drive App 20040075935 - Yatsu, Masahide	2004-04-22
Method and apparatus for controlling the actuator of the head-positioning system provided in a disk drive App 20030161065 - Yatsu, Masahide	2003-08-28
Magnetic disk drive apparatus having a self-servo writing system and method for writing servo pattern therein App 20020135927 - Yatsu, Masahide	2002-09-26
System for head positioning control in a disk drive Grant 6,417,983 - Yatsu July 9, 2	2002-07-09
Head positioning control system for use in a disk storage drive Grant 6,175,465 - Kawachi , et al. January 16, 2	2001-01-16
Head positioning control system for use in a disk drive using different target velocity data for read and write seeks Grant 6,002,544 - Yatsu December 14, 1	1999-12-14
Head positioning control system for use in a disk storage system Grant 5,801,897 - Kanda , et al. September 1, 1	1998-09-01
Head positioning system and method for use in disk recording/reproducing apparatus Grant 5,754,358 - Yatsu May 19, 1	1998-05-19
Control device of the disk apparatus for positioning a head on a disk Grant 5,680,271 - Yatsu October 21, 1	1997-10-21

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