Inventor
Hirofumi Takayama
Inventor
Kyoto, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Kprimary
H02KDynamo-electric machines33%
G11BInformation storage based on relative movement between record carrier and transducer22%
F16CShafts11%
G03GElectrography11%
G06FElectric digital data processing11%
Y10TTechnical subjects covered by former us classification11%
PatentTitleYear
8,687,316'Spindle motor and disk drive apparatus'20148,675,305'Base unit, spindle motor, and disk drive apparatus'20147,908,737'Production method of fluid dynamic-pressure bearing in spindle motor'20116,647,218'Image forming apparatus that discriminates an abnormality in a fixing unit'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003Patents assigned to CANON KK (1)· patent assignee history
2003Based in Toride, JP· patent location history
2011–2014Patents assigned to NIDEC CORP (3)· patent assignee history
2011–2014Based in Kyoto, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIDEC CORP | 3 | 2011–2014 |
| CANON KK | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kyoto, JP | 3 | 2011–2014 |
| Toride, JP | 1 | 2003 |