Inventor
Masafumi Ishiyama
Inventor
Singapore, SG
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 transducer50%
Y10TTechnical subjects covered by former us classification20%
C23CCoating metallic material10%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form5%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices5%
C10MLubricating compositions3%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions3%
PatentTitleYear
9,946,153Mask blank and transfer mask20189,470,971'Mask blank, transfer mask, and methods of manufacturing the same'20169,159,351'Perpendicular magnetic recording medium and method of manufacturing the same'20158,871,368'Perpendicular magnetic recording medium and process for manufacture thereof'20148,795,857'Perpendicular magnetic recording medium and manufacturing method of the same'20148,709,532'Magnetic disk and manufacturing method thereof'20148,623,528'Method of manufacturing perpendicular magnetic recording medium and perpendicular magnetic recording medium'20148,425,975'Magnetic disk and magnetic disk manufacturing method'20138,309,239'Perpendicular magnetic recording medium and method of manufacturing the same'20128,142,916'Magnetic recording medium'20128,092,931'Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk'20128,057,926'Perpendicular magnetic recording medium'20117,736,768'Magnetic disk and manufacturing method thereof'20107,722,968'Magnetic disk and manufacturing method thereof'20107,695,833'Solid body surface evaluation method, magnetic disk evaluation method, magnetic disk, and manufacturing method thereof'20107,597,973'Magnetic disk and method of producing the same'20097,537,846'Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk'20097,452,440'Method and device for producing laminated composite'20087,208,236'Magnetic recording medium with multi-portion carbon-based protection layer, and apparatus thereof'20077,174,775'Solid body surface evaluation method, magnetic disk evaluation method, magnetic disk, and manufacturing method thereof'20077,166,319'Magnetic disk and method of producing the same'20077,105,241'Magnetic disk and method of manufacturing same'20067,063,768'Method and device for producing laminated composite'20066,946,191'Magnetic recording medium'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005–2010Patents assigned to HOYA MAGNETICS SINGAPORE PTE (10)· patent assignee history
2005–2015Based in Singapore, SG· patent location history
2006–2008Based in Kyoto, JP· patent location history
2011–2015Patents assigned to ISHIYAMA MASAFUMI (10)· patent assignee history
2011–2015Patents assigned to WD MEDIA SINGAPORE PTE LTD (10)· patent assignee history
2011–2015Patents assigned to AYAMA KENJI (7)· patent assignee history
2011–2015Patents assigned to UMEZAWA TEIICHIRO (7)· patent assignee history
2016–2018Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOYA MAGNETICS SINGAPORE PTE | 10 | 2005–2010 |
| ISHIYAMA MASAFUMIself | 10 | 2011–2015 |
| WD MEDIA SINGAPORE PTE LTD | 10 | 2011–2015 |
| AYAMA KENJI | 7 | 2011–2015 |
| UMEZAWA TEIICHIRO | 7 | 2011–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Singapore, SG | 20 | 2005–2015 |
| Tokyo, JP | 2 | 2016–2018 |
| Kyoto, JP | 2 | 2006–2008 |