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Inventor

Katsuhiko Ohta

Inventor
Tokyo, JP

Overview

4→
Patents
2010–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 4 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 transducer38%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for13%
F01MLubricating of machines or engines in general13%
F02FCylinders, pistons or casings, for combustion engines13%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof13%
F16MFrames, casings or beds of engines, machines or apparatus, not specific to engines, machines or apparatus provided for elsewhere13%
PatentTitleYear
10,920,631Head cover for internal combustion engine cylinder head20218,553,348'Disk drive and servo-control method therefor'20137,986,496'Disk drive device and ramp used therefor'20117,830,639'Data storage device and disk drive'2010

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010Patents assigned to HITACHI GLOBAL STORAGE TECH (1)· patent assignee history
2010–2013Based in Tokyo, JP· patent location history
2011Patents assigned to HITACHI GLOBAL STORAGE TECH NL (1)· patent assignee history
2013Patents assigned to HGST Netherlands BV (1)· patent assignee history
2021Patents assigned to MAHLE FILTER SYSTEMS JP CORP (1)· patent assignee history
2021Patents assigned to MAHLE INT GMBH (1)· patent assignee history
2021Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HGST Netherlands BV12013
HITACHI GLOBAL STORAGE TECH12010
HITACHI GLOBAL STORAGE TECH NL12011
MAHLE FILTER SYSTEMS JP CORP12021
MAHLE INT GMBH12021
Locations
LocationPatentsSpan
Tokyo, JP32010–2013
Saitama, JP12021