Inventor
Chikashi Yoshinaga
Inventor
Kanagawa, 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 transducer47%
H03MCoding40%
H10DInorganic electric semiconductor devices7%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h107%
PatentTitleYear
8,488,422'Elastic member, mounting structure of optical element, and pickup apparatus having the same'20138,143,698'Semiconductor device'20127,934,226'Optical pickup apparatus'20117,924,205'Successive approximation type analog/digital converter and operation method of successive approximation type analog/digital converter'20117,786,908'Successive approximation type A/D converter'20107,773,012'A/D converter'20107,672,197'Optical pickup device and manufacturing method thereof'20107,665,101'Optical pickup apparatus'20107,388,815'Wiring layout structure for optical head device'20086,845,510'Objective lens driving device with cover having an opening for exposing a tracking coil'20056,750,800'Analog-digital converter and method for converting data of the same'20046,496,131'Capacitor-array D/A converter including a thermometer decoder and a capacitor array'20026,433,727'AD converter with a power saving circuit and its control method'20025,136,565'Optical device for reading and writing data on a recording medium'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2013Patents assigned to SANYO ELECTRIC CO (7)· patent assignee history
1992–2010Based in Gunma, JP· patent location history
2002Patents assigned to NEC CORP (2)· patent assignee history
2004–2010Patents assigned to NEC ELECTRONICS CORP (3)· patent assignee history
2004–2012Based in Kanagawa, JP· patent location history
2008Based in Nitta-gun, JP· patent location history
2010–2013Based in Ota, JP· patent location history
2011–2012Patents assigned to RENESAS ELECTRONICS CORP (2)· patent assignee history
2011Based in Yokohama, JP· patent location history
2012–2013Patents assigned to YOSHINAGA CHIKASHI (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SANYO ELECTRIC CO | 7 | 1992–2013 |
| NEC ELECTRONICS CORP | 3 | 2004–2010 |
| NEC CORP | 2 | 2002 |
| RENESAS ELECTRONICS CORP | 2 | 2011–2012 |
| YOSHINAGA CHIKASHIself | 2 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 4 | 2004–2012 |
| Ota, JP | 3 | 2010–2013 |
| Gunma, JP | 3 | 1992–2010 |
| Yokohama, JP | 1 | 2011 |
| Nitta-gun, JP | 1 | 2008 |