Inventor

Tetsuo Sadamasa

Inventor

Chigasaki, JP

Overview

18→

Patents

1976–1995

Patent span

Electricity

Primary field (CPC H)

Patents· 18 as inventor

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

H10Hprimary

H10HInorganic light-emitting semiconductor devices having potential barriers21%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation13%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1013%

G09FDisplaying8%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light8%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%

B82YSpecific uses or applications of nanostructures5%

H10DInorganic electric semiconductor devices5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

PatentTitleYear

5,432,812'Semiconductor laser device with multi-directional reflector arranged therein'1995 5,253,262'Semiconductor laser device with multi-directional reflector arranged therein'1993 5,144,381'Semiconductor light detector utilizing an avalanche effect and having an improved guard ring structure'1992 5,084,410'Method of manufacturing semiconductor devices'1992 5,001,335'Semiconductor photodetector device and method of manufacturing the same'1991 4,992,386'Method of manufacturing a semiconductor light detector'1991 4,949,144'Semiconductor photo-detector having a two-stepped impurity profile'1990 4,706,101'Light emitting diode formed of a compound semiconductor material'1987 4,647,927'Display device'1987 4,625,223'Double heterostructure light-emitting semiconductor device'1986 4,465,543'Apparatus and method for arranging semiconductor pellets'1984 4,445,132'LED Module for a flat panel display unit'1984 4,432,131'Method for manufacturing display device'1984 4,322,735'Display device'1982 4,228,455'Gallium phosphide semiconductor device having improved electrodes'1980 4,145,707'Semiconductor luminescent display apparatus'1979 3,997,907'Light emitting gallium phosphide device'1976 3,951,699'Method of manufacturing a gallium phosphide red-emitting device'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1987Patents assigned to TOKYO SHIBAURA ELECTRIC CO (9)· patent assignee history

1976–1984Based in Tokyo, JP· patent location history

1984–1987Based in Kawasaki, JP· patent location history

1986–1995Patents assigned to TOSHIBA KK (9)· patent assignee history

1986–1995Based in Chigasaki, JP· patent location history

1992Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOKYO SHIBAURA ELECTRIC CO	9	1976–1987
TOSHIBA KK	9	1986–1995

Locations

Location	Patents	Span
Chigasaki, JP	8	1986–1995
Tokyo, JP	6	1976–1984
Kawasaki, JP	3	1984–1987
Kanagawa, JP	1	1992