Inventor · disambiguated record
Hirotsugu Yamagata
Also filed as: YAMAGATA HIROTSUGU
8 granted patents·818 citations·filing 1987–2002
91Inventor score
Files withHITACHI LTD8
Top patents by PatentIndex Score
8 records- 0195US5737742AMemory system using flash memory and method of controlling the memory systemHITACHI LTD·Filed 1995·Granted Apr 7, 1998·259 cites·16 claims
- 0295US5359569ASemiconductor memoryHITACHI LTD·Filed 1992·Granted Oct 25, 1994·236 cites·14 claims
- 0393US5515333ASemiconductor memoryHITACHI LTD·Filed 1994·Granted May 7, 1996·181 cites·3 claims
- 0492US4908793AStorage apparatus including a semiconductor memory and a disk driveHITACHI LTD·Filed 1987·Granted Mar 13, 1990·50 cites·3 claims
- 0578US5930193AMemory system using a flash memory and method of controlling the memory systemHITACHI LTD·Filed 1997·Granted Jul 27, 1999·67 cites·2 claims
- 0659US6700829B2Memory package, memory system and hot-line insertion/removal method thereofHITACHI LTD·Filed 2002·Granted Mar 2, 2004·10 cites·4 claims
- 0741US6385114B1Memory package, memory system and hot-line insertion/removal method thereofHITACHI LTD·Filed 1999·Granted May 7, 2002·7 cites·11 claims
- 0834US6058039AMemory package and hot-line insertion/removal method using time constant based on-off switchingHITACHI LTD·Filed 1995·Granted May 2, 2000·8 cites·5 claims
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