Inventor
Tomokazu Ishii
Inventor
Ibaraki, 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 transducer53%
G05BControl or regulating systems in general20%
C30BSingle-crystal growth13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
9,617,655'Manufacturing apparatus of SiC single crystal and method for manufacturing SiC single crystal'20179,322,112'Apparatus and method for production of SiC single crystal'20168,305,713'Head stack latch assembly'20127,215,506'Hard disk drive (HDD) assembly of small form-factor HDD shock-mounted in frame having dimensions of larger form-factor HDD'20076,549,377'Magnetic disk drive with a movable ramp mechanism for relieving impact upon loading and unloading'20036,369,988'Magnetic disk drive with a movable ramp mechanism for relieving impact upon loading and unloading'20025,754,361'Information recording and/or reproducing apparatus having a tape threading device with tape guide members having minimum tape wrapping angles'19985,739,976'Magnetic recording and reproducing apparatus'19985,497,059'Control method and apparatus for a servo- mechanism'19965,495,371'Magnetic tape library device and method for maintaining magnetic recording and reproducing device and magnetic head'19965,371,449'Servo control method for a servo system'19945,352,961'Control method and apparatus for a servo-mechanism'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2003Patents assigned to HITACHI LTD (8)· patent assignee history
1994–1998Based in Ibaraki, JP· patent location history
1998Based in Chiyoda-ku, JP· patent location history
2002–2007Based in Hiratsuka, JP· patent location history
2012–2017Patents assigned to ISHII TOMOKAZU (3)· patent assignee history
2012Based in Yohokama, JP· patent location history
2016–2017Patents assigned to KAMEI KAZUHITO (2)· patent assignee history
2016–2017Patents assigned to KUSUNOKI KAZUHIKO (2)· patent assignee history
2016–2017Patents assigned to SAKAMOTO HIDEMITSU (2)· patent assignee history
2016–2017Based in Susono, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 8 | 1994–2003 |
| ISHII TOMOKAZUself | 3 | 2012–2017 |
| KAMEI KAZUHITO | 2 | 2016–2017 |
| KUSUNOKI KAZUHIKO | 2 | 2016–2017 |
| SAKAMOTO HIDEMITSU | 2 | 2016–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaraki, JP | 4 | 1994–1998 |
| Hiratsuka, JP | 3 | 2002–2007 |
| Susono, JP | 2 | 2016–2017 |
| Yohokama, JP | 1 | 2012 |
| Chiyoda-ku, JP | 1 | 1998 |