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Inventor

Kazuyoshi Yamagata

Inventor
Fukushima, JP

Overview

4→
Patents
1991–1999
Patent span
Electricity
Primary field (CPC H)

Patents· 4 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 barriers29%
F21KNon-electric light sources using luminescence14%
G01SRadio direction-finding14%
H01HElectric switches14%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1014%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
PatentTitleYear
5,893,633'Light-emitting apparatus and method of producing the same'19995,841,154'Light-emitting diode device with reduced scatter'19985,835,209'Relative-angle detection apparatus'19985,066,842'Key top'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1999Patents assigned to ALPS ELECTRIC CO LTD (4)· patent assignee history
1991Based in Sumiyoshi, JP· patent location history
1998–1999Based in Fukushima, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ALPS ELECTRIC CO LTD41991–1999
Locations
LocationPatentsSpan
Fukushima, JP31998–1999
Sumiyoshi, JP11991