Inventor
Junko Ushiyama
Inventor
Kokubunji, JP
Overview
Patents· 38 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 transducer69%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
Y10TTechnical subjects covered by former us classification11%
B82YSpecific uses or applications of nanostructures4%
H03MCoding4%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form2%
PatentTitleYear
9,275,672'Magnetic head, magnetic recording method and apparatus for controlling magnetic head with spin torque oscillator in a disk drive'20168,147,941'Multi-information-layer recording medium and manufacturing process'20128,089,841'Reproducing signal measuring method, signal reproducing apparatus, and optical recording medium'20128,085,638'Test-write method, information recording method, and information recording apparatus'20117,957,240'Test writing method and information recording device'20117,911,910'Information recording method and apparatus with suppressed mark edge jitters'20117,907,491'Information recording method and apparatus with suppressed mark edge jitters'20117,907,490'Information recording method and apparatus with suppressed mark edge jitters'20117,852,727'Information recording method and apparatus with suppressed mark edge jitters'20107,764,583'Information recording method and information recording device'20107,751,293'Test-write method, information recording method, and information recording apparatus'20107,688,696'Information recording method and information recording device'20107,684,301'Information recording method and apparatus with suppressed mark edge jitters'20107,529,165'Test writing method and information recording device'20097,417,933'Information recording method and apparatus with suppressed mark edge jitters'20087,215,261'DVD recording method and rewritable DVD apparatus'20077,042,823'Information recording method and apparatus with suppressed mark edge jitters'20067,016,282'Information recording method and optical disk unit'20067,012,871'Information recording method and apparatus with suppressed mark edge jitters'20067,009,532'DVD recording method and rewritable DVD apparatus'20066,954,941'Information recording medium and information recording device'20056,842,415'Information recording method and apparatus with suppressed mark edge jitters'20056,842,412'Information recording method and optical disc apparatus'20056,806,030'Information recording medium and method for manufacturing information recording medium'20046,775,226'Optical recording medium having a plurality of interference layers of different refractive index'20046,740,382'Information recording medium'20046,709,801'Information recording medium'20046,703,098'Information recording medium and method for manufacturing information recording medium'20046,636,477'Information recording medium and information recording device'20036,608,806'Information recording method and apparatus with suppressed mark edge jitters'20036,529,467'Information recording method and apparatus with suppressed mark edge jitters'20036,436,504'Information recording medium'20026,343,056'Information recording method and apparatus with suppressed mark edge jitters'20026,312,779'Information recording medium and information recording/reproducing apparatus'20016,236,635'Information recording method and apparatus with suppressed mark edge jitters'20016,231,945'Information recording medium'20015,886,969'High-density information recording/reproducing method'19995,835,469'High-density information recording/reproducing method'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998–2016Patents assigned to HITACHI LTD (35)· patent assignee history
1998–2016Based in Kokubunji, JP· patent location history
2001–2005Patents assigned to HITACHI MAXELL (8)· patent assignee history
2001–2011Based in Kodaira, JP· patent location history
2006–2007Patents assigned to HITACHI LG DATA STORAGE INC (2)· patent assignee history
2011–2012Patents assigned to USHIYAMA JUNKO (3)· patent assignee history
2011–2012Patents assigned to MINEMURA HIROYUKI (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 35 | 1998–2016 |
| HITACHI MAXELL | 8 | 2001–2005 |
| USHIYAMA JUNKOself | 3 | 2011–2012 |
| HITACHI LG DATA STORAGE INC | 2 | 2006–2007 |
| MINEMURA HIROYUKI | 2 | 2011–2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kokubunji, JP | 21 | 1998–2016 |
| Kodaira, JP | 17 | 2001–2011 |