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Inventor

Masafumi Iwashiro

Inventor
Ome, JP

Overview

16→
Patents
1998–2020
Patent span
Physics
Primary field (CPC G)

Patents· 16 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 transducer88%
G05BControl or regulating systems in general6%
G06FElectric digital data processing6%
PatentTitleYear
10,553,248Magnetic disk device and head position control method202010,372,375Magnetic disk device and command reordering method thereof201910,217,485Magnetic disc device and position control method20198,817,416'Magnetic disk device and method of controlling magnetic heads'20148,773,808'Magnetic disk device and head-position control method'20148,315,008'Magnetic disk device and head position control method'20127,423,835'Method and apparatus for servo control using spiral servo information in a disk drive'20087,221,533'Method and apparatus for servo information writing in a disk drive'20077,173,789'Head position calculation method in magnetic disc apparatus'20077,158,334'Method and apparatus for head positioning control with disturbance compensation in a disk drive'20077,061,710'Method and apparatus for positioning a head in a disk drive with servo writing function'20066,940,680'Method and apparatus for head positioning control in disk drive'20056,934,116'Method and apparatus for head positioning control in a disk drive'20056,680,812'Head positioning control system using sampled data control system for disk drive'20046,429,996'Method and apparatus for head-positioning control, for use in a disk drive'20025,847,527'Method and apparatus for digital position control'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2020Patents assigned to TOSHIBA KK (15)· patent assignee history
1998–2014Based in Tokyo, JP· patent location history
2004–2008Based in Ome, JP· patent location history
2012–2014Patents assigned to IWASHIRO MASAFUMI (2)· patent assignee history
2014Patents assigned to ABE TAKAO (1)· patent assignee history
2014Patents assigned to KUBOTA HIROSHI (1)· patent assignee history
2014Based in Kanagawa, JP· patent location history
2019–2020Patents assigned to TOSHIBA ELECTRONIC DEVICES & STORAGE CORP (2)· patent assignee history
2019–2020Based in Yokohama-shi, Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOSHIBA KK151998–2020
IWASHIRO MASAFUMIself22012–2014
TOSHIBA ELECTRONIC DEVICES & STORAGE CORP22019–2020
ABE TAKAO12014
KUBOTA HIROSHI12014
Locations
LocationPatentsSpan
Ome, JP82004–2008
Tokyo, JP41998–2014
Yokohama-shi, Kanagawa, JP32019–2020
Kanagawa, JP12014