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Inventor

Keiji Fukumura

Inventor
Hyougo, JP

Overview

10→
Patents
1986–2015
Patent span
Physics
Primary field (CPC G)

Patents· 10 as inventor

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

G11Cprimary
G11CStatic stores60%
G05FSystems for regulating electric or magnetic variables10%
H10BElectronic memory devices10%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1010%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1010%
PatentTitleYear
9,063,558'Current limiting circuit configured to limit output current of driver circuit'20158,415,811'Semiconductor package and electronic component package'20136,002,618'NMOS input receiver circuit'19995,953,262'Output circuit of a semiconductor memory device for providing an intermediate potential to an output terminal'19995,870,346'VLSI memory circuit'19995,608,687'Output driver control for ROM and RAM devices'19975,487,038'Method for read cycle interrupts in a dynamic read-only memory'19964,990,999'Semiconductor memory device using high-density and high-speed MOS elements'19914,774,692'Sense circuit of a semiconductor memory device'19884,574,950'Wafer box'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2015Based in Osaka, JP· patent location history
1988–1999Patents assigned to RICOH KK (3)· patent assignee history
1988–1991Based in Toyonaka, JP· patent location history
1996–1999Patents assigned to ROCOH COMPANY LTD (3)· patent assignee history
1996–1997Patents assigned to CREATIVE INTEGRATED SYST INC (2)· patent assignee history
1996–1999Based in Hyougo, JP· patent location history
1999Based in Hyogo, JP· patent location history
2013–2015Patents assigned to FUKUMURA KEIJI (2)· patent assignee history
2013–2015Patents assigned to RICOH CO LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK31988–1999
ROCOH COMPANY LTD31996–1999
CREATIVE INTEGRATED SYST INC21996–1997
FUKUMURA KEIJIself22013–2015
RICOH CO LTD22013–2015
Locations
LocationPatentsSpan
Hyougo, JP41996–1999
Osaka, JP31986–2015
Toyonaka, JP21988–1991
Hyogo, JP11999