Inventor
Hiroyuki Yonei
Inventor
Hikone, JP
Overview
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 transducer39%
H02KDynamo-electric machines35%
F16JPistons10%
F16CShafts6%
Y10TTechnical subjects covered by former us classification6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
7,460,334'Spindle motor and recording-disk drive furnished with the spindle motor'20087,254,882'Sealing method for through hole formed in metal housing'20077,105,963'Lead wire sealing device, recording disk drive, and method for sealing housing member'20065,453,890'Low airflow hard disk apparatus'19955,333,079'Low profile hard disk apparatus'19945,325,004'Motor'19945,317,225'Spindle motor and disk clamp mechanism used therein'19945,256,922'Spindle motor'19935,214,326'Spindle motor with magnetic shield for magnetic fluid seal'19935,214,331'Lead holder for a spindle motor'19935,153,470'Spindle motor'19925,138,209'Spindle motor'19925,134,331'Spindle motor'19924,980,587'Spindle motor with precision bearings'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1995Patents assigned to NIHON DENSAN KK (10)· patent assignee history
1990Based in Echi-gun, JP· patent location history
1992–1994Based in Hikone, JP· patent location history
1993Patents assigned to NIHON DENSAN NAGANO KK (1)· patent assignee history
1993–1995Based in Shiga, JP· patent location history
1994Patents assigned to NIPPON DENSEN CORP (1)· patent assignee history
2006–2008Patents assigned to NIDEC CORP (3)· patent assignee history
2006–2008Based in Kyoto, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIHON DENSAN KK | 10 | 1990–1995 |
| NIDEC CORP | 3 | 2006–2008 |
| NIHON DENSAN NAGANO KK | 1 | 1993 |
| NIPPON DENSEN CORP | 1 | 1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hikone, JP | 6 | 1992–1994 |
| Shiga, JP | 4 | 1993–1995 |
| Kyoto, JP | 3 | 2006–2008 |
| Echi-gun, JP | 1 | 1990 |