Osafune; Koji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Osafune; Koji.The latest application filed is for "method and apparatus for head positioning control in a disk drive".

Company Profile

0.12.12

Osafune; Koji - Ome JP
Osafune; Koji - Ome-shi JP
Osafune; Koji - Tokyo JP
Osafune; Koji - Nishitama 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
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 head positioning control in a disk drive App 20070139811 - Ohinata; Yusuke ; et al.	2007-06-21
Method and apparatus for head positioning control in a disk drive Grant 7,057,844 - Sakai , et al. June 6, 2	2006-06-06
Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive Grant 7,035,036 - Shimomura , et al. April 25, 2	2006-04-25
Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive App 20060082921 - Shimomura; Kazuhito ; et al.	2006-04-20
Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive Grant 7,019,936 - Osafune , et al. March 28, 2	2006-03-28
Method and apparatus for data reproducing in a disk drive Grant 7,009,792 - Sakai , et al. March 7, 2	2006-03-07
Method and apparatus for servo writing in a disk drive App 20050264917 - Yano, Koji ; et al.	2005-12-01
Disk drive with control of read and write gate signals for read and write operation Grant 6,950,259 - Osafune September 27, 2	2005-09-27
Method and apparatus for head positioning control in a disk drive App 20050168863 - Sakai, Yuji ; et al.	2005-08-04
Disk drive and magnetic head device for perpendicular magnetic recording App 20050105213 - Takeo, Akihiko ; et al.	2005-05-19
Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive App 20050073771 - Shimomura, Kazuhito ; et al.	2005-04-07
Method and apparatus for recovering read errors in a disk drive App 20050052770 - Osafune, Koji	2005-03-10
Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive App 20050024762 - Osafune, Koji ; et al.	2005-02-03
Magnetic disk drive and position error signal generation method Grant 6,762,895 - Osafune July 13, 2	2004-07-13
Method and apparatus for data reproducing in a disk drive App 20040075930 - Sakai, Yuji ; et al.	2004-04-22
Apparatus and method for retracting the head on power down in a disk drive Grant 6,594,102 - Kanda , et al. July 15, 2	2003-07-15
Disk drive with control of read and write gate signals for read and write operation App 20020131191 - Osafune, Koji	2002-09-19
Disk drive including preamplifier for perpendicular magnetic recording system App 20020089773 - Shimomura, Kazuhito ; et al.	2002-07-11
Apparatus and method for control head unloading on power down in a disk drive Grant 6,396,652 - Kawachi , et al. May 28, 2	2002-05-28
Magnetic disk drive and position error signal generation method App 20020034030 - Osafune, Koji	2002-03-21
Head assembly controlling distortion due to temperature variation and disk apparatus using the head assembly Grant 5,636,088 - Yamamoto , et al. June 3, 1	1997-06-03
Method and apparatus depending on the selected power source for controlling the positioning of a recording/reproducing apparatus Grant 4,931,889 - Osafune June 5, 1	1990-06-05
Floppy disc magnetic head apparatus compatible with both horizontal and perpendicular recording media Grant 4,803,571 - Fujioka , et al. February 7, 1	1989-02-07

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