Inventor
Toshiaki Iwanaga
Inventor
Tokyo, JP
Overview
Patents· 24 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 transducer67%
B25JManipulators13%
Y10TTechnical subjects covered by former us classification13%
F16CShafts3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
7,636,287'Reproduced signal equalizing method for optical information media and optical information reproducing/recording apparatus'20097,489,620'Optical information recording and reproducing medium'20097,471,601'Optical disk recording/reproducing method, optical disk recording/reproducing apparatus and optical disk'20087,428,203'Signal evaluation method, information recording/reproducing apparatus, information reproducing apparatus, and information recording medium'20087,414,955'Optical disc and recording/producing method therefor'20087,355,957'Optical disc medium having a system information recording area of low recording density'20087,295,500'Recording condition setting method and information recorder using same'20077,196,984'Optical disk medium and optical disk recording and reproducing apparatus'20077,184,381'Optical disk, optical disk recording/reproduction apparatus, and optical disk signal quality evaluation method'20076,861,965'Code modulating method and code modulating apparatus, demodulating method and demodulating apparatus, and information recording medium'20056,643,234'Optical disk device'20036,621,774'Optical disk device'20036,459,661'Optical disk and optical disk device'20026,108,293'Gain control of a reproduced signal amplifier for precise monitoring of a reproduced signal during recording'20006,065,364'Stopper for use in an industrial robot'20005,889,744'Magneto-optical disk recording device and capable of verifying recorded state during recording and checking erased state during erasing'19995,883,868'Magneto-optical disk recording device capable of checking erased state during erasing'19995,751,677'Magnetio optical disk recording device capable of verifying recorded state during recording and checking erased state during erasing'19985,708,639'Magneto-optical disk recording device capable of verifying recorded state during recording and checking erased state during erasing'19985,689,487'Verify-while-recording device for optical disk recording apparatus'19975,456,132'Wrist mechanism for industrial robot'19955,265,489'Arm-driving device for industrial robot'19934,998,830'Device for supporting arm driving shafts of industrial robot'19914,951,274'Magneto-optical head capable of separating beams for reading recorded information and servo information by use of one optical element'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2009Patents assigned to NEC CORP (19)· patent assignee history
1990–2009Based in Tokyo, JP· patent location history
1991–2000Patents assigned to YASKAWA DENKI SEISAKUSHO KK (4)· patent assignee history
1991–1995Based in Kitakyushu, JP· patent location history
2000Based in Fukuoka, JP· patent location history
2005–2009Patents assigned to TOSHIBA KK (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NEC CORP | 19 | 1990–2009 |
| TOSHIBA KK | 6 | 2005–2009 |
| YASKAWA DENKI SEISAKUSHO KK | 4 | 1991–2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 20 | 1990–2009 |
| Kitakyushu, JP | 3 | 1991–1995 |
| Fukuoka, JP | 1 | 2000 |