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Inventor

Duk-Soon Choi

Inventor
Chungcheongnam-do, KR

Overview

3→
Patents
2005–2019
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

G01Rprimary
G01RMeasuring electric variables33%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles17%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology17%
F16HGearing17%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1017%
PatentTitleYear
10,480,622Two-speed transmission for electric vehicle20199,664,706'Semiconductor chip testing apparatus for picking up and testing a semiconductor chip'20176,911,815'Semiconductor test system and method of operating the same'2005

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005Patents assigned to SAMSUNG ELECTRONICS CO LTD (1)· patent assignee history
2005Based in Asan-si, KR· patent location history
2017Patents assigned to AMKOR TECHNOLOGY INC (1)· patent assignee history
2017Patents assigned to NTS CO LTD (1)· patent assignee history
2017Patents assigned to SEMICORE INC (1)· patent assignee history
2017Based in Cheonan-si, KR· patent location history
2019Patents assigned to NEOOTO CO LTD (1)· patent assignee history
2019Based in Chungcheongnam-do, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AMKOR TECHNOLOGY INC12017
NEOOTO CO LTD12019
NTS CO LTD12017
SAMSUNG ELECTRONICS CO LTD12005
SEMICORE INC12017
Locations
LocationPatentsSpan
Chungcheongnam-do, KR12019
Cheonan-si, KR12017
Asan-si, KR12005