Inventor

Shinichi Ikenaga

Inventor

Koganei, JP

Overview

1987–2009

Patent span

Electricity

Primary field (CPC H)

Patents· 21 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Cprimary

G11CStatic stores36%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1024%

H10BElectronic memory devices19%

H10DInorganic electric semiconductor devices15%

G06FElectric digital data processing3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

7,499,340'Semiconductor memory device and defect remedying method thereof'2009 7,345,929'Semiconductor memory device and defect remedying method thereof'2008 7,203,101'Semiconductor memory device and defect remedying method thereof'2007 7,016,236'Semiconductor memory device and defect remedying method thereof'2006 6,898,130'Semiconductor memory device and defect remedying method thereof'2005 6,657,901'Semiconductor device formed in a rectangle region on a semiconductor substrate including a voltage generating circuit'2003 6,515,913'Semiconductor memory device and defect remedying method thereof'2003 6,335,884'Semiconductor memory device and defect remedying method thereof'2002 6,212,089'Semiconductor memory device and defect remedying method thereof'2001 6,160,744'Semiconductor memory device and defect remedying method thereof'2000 6,049,500'Semiconductor memory device and defect remedying method thereof'2000 5,854,508'Semiconductor memory device having zigzag bonding pad arrangement'1998 5,602,771'Semiconductor memory device and defect remedying method thereof'1997 5,579,256'Semiconductor memory device and defect remedying method thereof'1996 4,949,306'Sense circuit and semiconductor memory having a current-voltage converter circuit'1990 4,942,556'Semiconductor memory device'1990 4,726,021'Semiconductor memory having error correcting means'1988 4,709,350'Semiconductor memory using multiple level storage structure'1987 4,701,884'Semiconductor memory for serial data access'1987 4,661,929'Semiconductor memory having multiple level storage structure'1987 4,636,985'Semiconductor memory having charge transfer device voltage amplifier'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2009Patents assigned to HITACHI LTD (18)· patent assignee history

1987–1990Based in Kokubunji, JP· patent location history

1990–2009Based in Koganei, JP· patent location history

1997–2009Patents assigned to HITACHI VLSI ENG (5)· patent assignee history

2000Patents assigned to HITACHI VSLI ENGINEERING CORP (1)· patent assignee history

2006–2008Patents assigned to HITACHI ULSI SYS CO LTD (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	18	1987–2009
HITACHI VLSI ENG	5	1997–2009
HITACHI ULSI SYS CO LTD	3	2006–2008
HITACHI VSLI ENGINEERING CORP	1	2000

Locations

Location	Patents	Span
Koganei, JP	15	1990–2009
Kokubunji, JP	6	1987–1990