Inventor

Nobuo Tamba

Inventor

Ohme, JP

Overview

1990–2004

Patent span

Electricity

Primary field (CPC H)

Patents· 17 as inventor

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

H10Dprimary

H10DInorganic electric semiconductor devices30%

G11CStatic stores18%

H10BElectronic memory devices15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

H03KPulse technique12%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%

PatentTitleYear

RE038545'Semiconductor memory device'2004 5,854,497'Semiconductor memory device'1998 5,852,365'Variable logic circuit and semiconductor integrated circuit using the same'1998 5,825,203'Variable logic integrated circuit device having connections through switch matrix and top layers for inter-cell connections'1998 5,661,329'Semiconductor integrated circuit device including an improved separating groove arrangement'1997 5,610,535'Programmable two-line, two-phase logic array'1997 5,594,270'Semiconductor memory device'1997 5,519,658'Semiconductor integrated circuit device and methods for production thereof'1996 5,512,497'Method of manufacturing a semiconductor integrated circuit device'1996 5,457,412'Semiconductor integrated circuit device including input circuitry to permit operation of a Bi-CMOS memory with ECL level input signals'1995 5,360,988'Semiconductor integrated circuit device and methods for production thereof'1994 5,354,699'Method of manufacturing semiconductor integrated circuit device'1994 5,255,225'Semiconductor integrated circuit device and memory consisting of semiconductor integrated circuit'1993 5,214,302'Semiconductor integrated circuit device forming on a common substrate MISFETs isolated by a field oxide and bipolar transistors isolated by a groove'1993 5,057,894'Semiconductor integrated circuit device'1991 4,984,058'Semiconductor integrated circuit device'1991 4,903,093'Semiconductor integrated circuit device double isolated CMOS input protection resistor'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1998Patents assigned to HITACHI LTD (16)· patent assignee history

1990–1998Based in Ohme, JP· patent location history

1991Patents assigned to AKITA ELECTRONICS CO LTD (1)· patent assignee history

1991Patents assigned to HITACHI MICROCUMPUTER ENG (1)· patent assignee history

1993Patents assigned to HITACHI DEVICE ENG (1)· patent assignee history

1993–1998Based in Ome, JP· patent location history

2004Patents assigned to RENESAS TECH CORP (1)· patent assignee history

2004Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	16	1990–1998
AKITA ELECTRONICS CO LTD	1	1991
HITACHI DEVICE ENG	1	1993
HITACHI MICROCUMPUTER ENG	1	1991
RENESAS TECH CORP	1	2004

Locations

Location	Patents	Span
Ohme, JP	13	1990–1998
Ome, JP	3	1993–1998
Tokyo, JP	1	2004