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Inventor

Hirohide Yamada

Inventor
Kumagaya, JP

Overview

7→
Patents
1984–1993
Patent span
Physics
Primary field (CPC G)

Patents· 7 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%
C04BLime, magnesia15%
Y10TTechnical subjects covered by former us classification15%
A61CDentistry8%
C01BNon-metallic elements8%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
PatentTitleYear
5,254,006'Permanent magnet assembly for false tooth stabilization'19935,052,099'Method of fabricating a magnetic head by sputter etching'19915,010,429'Floating magnetic head having improved static friction coefficient'19914,681,813'Ceramic substrate for a thin layer magnetic head'19874,642,719'Magnetic head assembly'19874,460,697'Process for producing non-oxide powders'19844,441,132'Magnetic head device'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1993Patents assigned to HITACHI METALS LTD (7)· patent assignee history
1984–1987Based in Kumagaya, JP· patent location history
1987Based in Utsunomiya, JP· patent location history
1991Based in Mooka, JP· patent location history
1993Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI METALS LTD71984–1993
Locations
LocationPatentsSpan
Kumagaya, JP31984–1987
Mooka, JP21991
Saitama, JP11993
Utsunomiya, JP11987