Inventor
Keishi Takahashi
Inventor
Fujisawa, JP
Overview
Patents· 18 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 transducer70%
F16CShafts4%
G01MTesting static or dynamic balance of machines or structures4%
G06FElectric digital data processing4%
H01FMagnets4%
H01RElectrically-conductive connections4%
H02KDynamo-electric machines4%
H05KPrinted circuits4%
PatentTitleYear
8,526,132'Servo patterning compatible with planarization of patterned magnetic disks'20137,620,740'Storage devices and method of transferring file between the devices'20097,542,223'Magnetic disk drive using load/unload area for data storage'20097,457,065'Systems and methods for hard disk drive optimization and manufacturing'20087,426,088'Magnetic disk drive with function assignment and manufacturing method therefor'20087,379,396'Rotary disk type storage device'20086,900,956'Disk device and data-erasing method'20056,643,087'Disk drive with improved retract circuit and method'20036,639,758'Disk drive apparatus including a load/unload ramp with different angles for standard and depopulated versions'20036,593,855'Shock measurement apparatus and shock measurement method'20036,532,137'Head assembly, disk drive apparatus, hard disk drive and method for manufacturing disk drive apparatus'20036,362,936'Suspension assembly with integral projections having a coating of elastic material'20026,163,440'Inertial latch mechanism for actuator of disk drive device'20006,137,658'Apparatus for guiding and locking a rotary actuator'20005,896,242'Spindle motor with stress alleviating groove provided in hub cylindrical protrusion portion'19995,760,997'Flexible cable structure for magnetic disk drives'19985,671,104'System and method for locking a disk actuator in vertical and horizontal directions'19974,691,258'Temperature compensating mechanism for positioning of a magnetic head of a magnetic disk drive'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2003Patents assigned to IBM (9)· patent assignee history
1987–2013Based in Fujisawa, JP· patent location history
2003–2009Patents assigned to HITACHI GLOBAL STORAGE TECH (7)· patent assignee history
2003–2009Based in Kanagawa, JP· patent location history
2008Patents assigned to HITCHI GLOBAL STORAGE TECHNOLO (1)· patent assignee history
2013Patents assigned to ALBRECHT THOMAS R (1)· patent assignee history
2013Patents assigned to HGST Netherlands BV (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 9 | 1987–2003 |
| HITACHI GLOBAL STORAGE TECH | 7 | 2003–2009 |
| ALBRECHT THOMAS R | 1 | 2013 |
| HGST Netherlands BV | 1 | 2013 |
| HITCHI GLOBAL STORAGE TECHNOLO | 1 | 2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fujisawa, JP | 13 | 1987–2013 |
| Kanagawa, JP | 5 | 2003–2009 |