Inventor
Harutaka Sekiya
Inventor
Sendai, JP
Overview
Patents· 12 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%
G01BMeasuring length, thickness or similar linear dimensions7%
G01NInvestigating or analysing materials by determining their chemical or physical properties7%
G02BOptical elements, systems or apparatus7%
H01LSemiconductor devices7%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h107%
PatentTitleYear
9,903,705'Apparatus for focus control and method for manufacturing semiconductor device'20189,256,061'Focus control apparatus and method'20167,440,373'Optical disk drive detecting disk surface deviation'20087,411,886'Device and method of recording information on an optical disc'20087,057,989'Device and method of recording information on an optical disc'20066,999,402'Device and method of recording information on an optical disc'20066,791,923'Device and method of recording information on an optical disc'20046,154,338'Recording/reproducing apparatus'20005,978,339'Recording/reproducing apparatus with a buffer member used for mounting a mechanism body'19995,940,245'Door opening-and-closing mechanism of recording/reproducing apparatus'19995,796,547'Disk cartridge and drive mechanism thereof'19985,220,550'Optical beam system for optical disk drives'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–2000Patents assigned to ALPS ELECTRIC CO LTD (5)· patent assignee history
1993Based in Kakuda, JP· patent location history
1998–2000Based in Fukushima, JP· patent location history
1999Patents assigned to NINTENDO CO LTD (1)· patent assignee history
2004–2018Patents assigned to SAMSUNG ELECTRONICS CO LTD (7)· patent assignee history
2004–2008Based in Sendai, JP· patent location history
2008Based in Tsurumi-ku, JP· patent location history
2016–2018Based in Yokohama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SAMSUNG ELECTRONICS CO LTD | 7 | 2004–2018 |
| ALPS ELECTRIC CO LTD | 5 | 1993–2000 |
| NINTENDO CO LTD | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sendai, JP | 4 | 2004–2008 |
| Fukushima, JP | 4 | 1998–2000 |
| Yokohama, JP | 2 | 2016–2018 |
| Tsurumi-ku, JP | 1 | 2008 |
| Kakuda, JP | 1 | 1993 |