Inventor

Tadashi Sakaue

Inventor

Hitachi, JP

Overview

8→

Patents

1977–2011

Patent span

Electricity

Primary field (CPC H)

Patents· 8 as inventor

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

H10Dprimary

H10DInorganic electric semiconductor devices33%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1033%

B62MRider propulsion of wheeled vehicles or sledges11%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure11%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation11%

PatentTitleYear

8,066,597'Electrically operated derailleur with force overload protection'2011 5,051,806'Gate turn-off thyristor of multi-emitter type'1991 5,003,369'Thyristor of overvoltage self-protection type'1991 4,868,625'Gate turn-off thyristor of multi-emitter type'1989 4,775,916'Pressure contact semiconductor device'1988 4,653,329'Pressure detector and strain member therefor'1987 4,305,088'Semiconductor device including means for alleviating stress caused by different coefficients of thermal expansion of the device components'1981 4,057,825'Semiconductor device with composite metal heat-radiating plate onto which semiconductor element is soldered'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1991Patents assigned to HITACHI LTD (6)· patent assignee history

1977–1991Based in Hitachi, JP· patent location history

1987Patents assigned to OKURA DENKI CO LTD (1)· patent assignee history

1987Based in Tokyo, JP· patent location history

1988Patents assigned to HITACHI HARAMACHI SEMI CONDUCT (1)· patent assignee history

2011Patents assigned to SAKAUE TADASHI (1)· patent assignee history

2011Patents assigned to SHIMANO KK (1)· patent assignee history

2011Based in Takatsuki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	6	1977–1991
HITACHI HARAMACHI SEMI CONDUCT	1	1988
OKURA DENKI CO LTD	1	1987
SAKAUE TADASHIself	1	2011
SHIMANO KK	1	2011

Locations

Location	Patents	Span
Hitachi, JP	6	1977–1991
Takatsuki, JP	1	2011
Tokyo, JP	1	1987