Inventor
Keiichi Takagi
Inventor
Tokorozawa, JP
Overview
Patents· 11 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 transducer37%
G06FElectric digital data processing16%
F16FSprings11%
H04NPictorial communication, e.g. television11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
G05BControl or regulating systems in general5%
H02KDynamo-electric machines5%
H05BElectric heating5%
PatentTitleYear
8,264,825'Flat type image display apparatus'20127,466,379'Display apparatus'20087,120,011'Flat type image display device'20066,880,162'Disk drive having an air flow path room'20056,799,324'Disc driving apparatus'20046,740,991'Current noise insulated spindle motor'20046,700,859'Information recording/reproducing apparatus with details of the pickup support unit'20046,690,638'Supporting mechanism for an optical disc reproducing apparatus having a sub-frame for suppressing vibration'20045,894,209'Apparatus for and method of controlling stepping motor'19995,245,602'Front loading disk player'19935,058,090'Magazine loading disk player'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2004Patents assigned to PIONEER ELECTRONIC CORP (5)· patent assignee history
1991–2004Based in Saitama, JP· patent location history
1993–2005Based in Tokorozawa, JP· patent location history
2004–2005Patents assigned to PIONEER CORP (3)· patent assignee history
2006–2012Patents assigned to SONY CORP (3)· patent assignee history
2006–2012Based in Kanagawa, JP· patent location history
2012Patents assigned to KATAYAMA KENICHI (1)· patent assignee history
2012Patents assigned to MAEDA HIROYOSHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PIONEER ELECTRONIC CORP | 5 | 1991–2004 |
| PIONEER CORP | 3 | 2004–2005 |
| SONY CORP | 3 | 2006–2012 |
| KATAYAMA KENICHI | 1 | 2012 |
| MAEDA HIROYOSHI | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokorozawa, JP | 4 | 1993–2005 |
| Saitama, JP | 4 | 1991–2004 |
| Kanagawa, JP | 3 | 2006–2012 |