LexDanaLexDanabeta
Inventor

Sachihiko Miwa

Inventor
Saitama, JP

Overview

5→
Patents
1988–1993
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 5 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F16Cprimary
F16CShafts36%
G11BInformation storage based on relative movement between record carrier and transducer27%
H02KDynamo-electric machines18%
C04BLime, magnesia9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
PatentTitleYear
5,224,782'Hydrodynamic bearing'19935,142,173'Bearing structure'19925,089,732'Spindle motor'19924,998,033'Gas dynamic bearing for spindle motor'19914,755,491'Manufacturing method for an aluminum nitride sintered body'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988Patents assigned to ONODA CEMENT CO LTD (1)· patent assignee history
1988Based in Ichikawa, JP· patent location history
1991–1993Patents assigned to EBARA CORP (4)· patent assignee history
1991–1992Based in Kanagawa, JP· patent location history
1992–1993Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
EBARA CORP41991–1993
ONODA CEMENT CO LTD11988
Locations
LocationPatentsSpan
Saitama, JP21992–1993
Kanagawa, JP21991–1992
Ichikawa, JP11988