Ryoji Fukuhisa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
System and method of conducting in-place write operations in a shin...
- Patent number 9,454,990
- Issue date Sep 27, 2016
- HGST Netherlands B.V.
- Ryoji Fukuhisa
- G11 - INFORMATION STORAGE
Information Patent Grant
Bad-sector search method, data recording device, and program
- Patent number 7,197,593
- Issue date Mar 27, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Ryoji Fukuhisa
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage apparatus and method for managing buffer memory
- Patent number 7,085,087
- Issue date Aug 1, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Ryoji Fukuhisa
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive apparatus and control method thereof
- Patent number 6,567,886
- Issue date May 20, 2003
- International Business Machines Corporation
- Hirofumi Saitoh
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Data reading method and data reading apparatus
- Patent number 6,516,401
- Issue date Feb 4, 2003
- International Business Machines Corporation
- Ryoji Fukuhisa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Data reading method and apparatus for a disk drive storage device
- Patent number 6,249,854
- Issue date Jun 19, 2001
- International Business Machines Corporation
- Ryoji Fukuhisa
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD OF CONDUCTING IN-PLACE WRITE OPERATIONS IN A SHIN...
- Publication number 20160293207
- Publication date Oct 6, 2016
- HGST NETHERLANDS B.V.
- Ryoji FUKUHISA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SYSTEM AND METHOD FOR LOGICAL REMOVAL OF PHYSICAL HEADS IN A HARD D...
- Publication number 20140317347
- Publication date Oct 23, 2014
- HGST NETHERLANDS B.V.
- Toru AIDA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Bad-sector search method, data recording device, and program
- Publication number 20040153745
- Publication date Aug 5, 2004
- Hitachi Global Storage Technologies Netherlands B.V.
- Ryoji Fukuhisa
- G11 - INFORMATION STORAGE
Information Patent Application
Data reading method and data reading apparatus
- Publication number 20020023194
- Publication date Feb 21, 2002
- International Business Machines Corporation
- Ryoji Fukuhisa
- G06 - COMPUTING CALCULATING COUNTING