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Inventor

Kazuyoshi Hanada

Inventor
Hadano, JP

Overview

14→
Patents
1992–2021
Patent span
Physics
Primary field (CPC G)

Patents· 14 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 transducer67%
C23CCoating metallic material11%
C21DModifying the physical structure of ferrous metals6%
C22CAlloys6%
F16CShafts6%
H01FMagnets6%
PatentTitleYear
10,982,329Insulation-coated oriented magnetic steel sheet and method for manufacturing same202110,920,323Insulating-coated oriented magnetic steel sheet and method for manufacturing same20218,274,755'Magnetic disk unit'20127,894,158'Magnetic disk apparatus'20117,545,601'Magnetic disk drive with line contact'20097,441,959'Bearing mechanism for spindle motor in magnetic disk drive'20086,967,813'Method of mounting magnetic disk device, cabinet for magnetic disk device, and magnetic disk device'20056,965,487'Controller for information recording and reproducing device and control method for the information recording and reproducing device'20056,728,074'Method and apparatus for information recording and reproducing using an air force latch mechanism'20046,717,774'Information recording and reproducing apparatus with an air force latch mechanism'20046,233,120'Magnetic disk device'20015,995,327'Magnetic disk device for restraining vibration of head mounting part'19995,953,178'Magnetic disk apparatus'19995,084,793'Mechanical apparatus having a mechanism for preventing conglutination of contact parts'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2004Patents assigned to HITACHI LTD (6)· patent assignee history
1992–2005Based in Hadano, JP· patent location history
2005–2009Patents assigned to HITACHI GLOBAL STORAGE TECH (4)· patent assignee history
2005Based in Odawara, JP· patent location history
2008–2012Based in Kanagawa, JP· patent location history
2012Patents assigned to HANADA KAZUYOSHI (1)· patent assignee history
2012Patents assigned to HITACHI GLOBAL STORAGE TECH NL (1)· patent assignee history
2021Patents assigned to JFE STEEL CORP (2)· patent assignee history
2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD61992–2004
HITACHI GLOBAL STORAGE TECH42005–2009
JFE STEEL CORP22021
HANADA KAZUYOSHIself12012
HITACHI GLOBAL STORAGE TECH NL12012
Locations
LocationPatentsSpan
Hadano, JP71992–2005
Kanagawa, JP42008–2012
Tokyo, JP22021
Odawara, JP12005