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Inventor

Junichi Umezaki

Inventor
Aichi, JP

Overview

10→
Patents
1996–2004
Patent span
Electricity
Primary field (CPC H)

Patents· 10 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 barriers36%
H10DInorganic electric semiconductor devices25%
B82YSpecific uses or applications of nanostructures18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light4%
PatentTitleYear
6,821,800'Semiconductor light-emitting device and manufacturing method thereof'20046,541,293'Semiconductor light-emitting device and manufacturing method thereof'20036,420,733'Semiconductor light-emitting device and manufacturing method thereof'20026,326,236'Semiconductor light-emitting device and manufacturing method thereof'20016,121,127'Methods and devices related to electrodes for p-type group III nitride compound semiconductors'20006,040,588'Semiconductor light-emitting device'20006,008,539'Electrodes for p-type group III nitride compound semiconductors'19995,862,167'Light-emitting semiconductor device using gallium nitride compound'19995,753,939'Light-emitting semiconductor device using a Group III nitride compound and having a contact layer upon which an electrode is formed'19985,587,593'Light-emitting semiconductor device using group III nitrogen compound'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2004Patents assigned to TOYODA GOSEI KK (10)· patent assignee history
1996–1999Patents assigned to JAPAN RES DEV CORP (2)· patent assignee history
1996–2004Based in Aichi, JP· patent location history
1998Patents assigned to TOYODA CHUO KENKYUSHO KK (1)· patent assignee history
1998Based in Inuyama, JP· patent location history
1999Patents assigned to AKASAKI ISAMU (1)· patent assignee history
1999Patents assigned to AMANO HIROSHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOYODA GOSEI KK101996–2004
JAPAN RES DEV CORP21996–1999
AKASAKI ISAMU11999
AMANO HIROSHI11999
TOYODA CHUO KENKYUSHO KK11998
Locations
LocationPatentsSpan
Aichi, JP91996–2004
Inuyama, JP11998