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Inventor

Hee Hyun Chang

Inventor
Seongnam-si, KR

Overview

12→
Patents
1996–2012
Patent span
Electricity
Primary field (CPC H)

Patents· 12 as inventor

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

H10Bprimary
H10BElectronic memory devices33%
H10DInorganic electric semiconductor devices25%
G11CStatic stores17%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1013%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
8,247,299'Flash memory device and fabrication method thereof'20127,696,554'Flash memory device'20107,414,871'Program control circuit of flash memory device having MLC and method thereof'20087,316,955'Method of manufacturing semiconductor device'20087,259,976'Program control circuit of flash memory device having MLC and method thereof'20077,169,670'Method of forming gate oxide layer in semiconductor device'20077,109,109'Contact plug in semiconductor device and method of forming the same'20067,034,360'High voltage transistor and method of manufacturing the same'20066,465,302'Method of manufacturing a flash memory device'20026,407,947'Method of erasing a flash memory device'20026,339,006'Flash EEPROM cell and method of manufacturing the same'20025,536,668'Method of manufacturing a virtual ground split gate nonvolatile memory device'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2002Patents assigned to HYUNDAI ELECTRONICS IND (4)· patent assignee history
1996–2008Based in Kyungki-do, KR· patent location history
2002Based in Kumi-shi, KR· patent location history
2006–2012Patents assigned to HYNIX SEMICONDUCTOR INC (8)· patent assignee history
2006–2012Based in Seongnam-si, KR· patent location history
2012Patents assigned to CHANG HEE HYUN (1)· patent assignee history
2012Patents assigned to JANG PHIL SOON (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HYNIX SEMICONDUCTOR INC82006–2012
HYUNDAI ELECTRONICS IND41996–2002
CHANG HEE HYUNself12012
JANG PHIL SOON12012
Locations
LocationPatentsSpan
Seongnam-si, KR62006–2012
Kyungki-do, KR51996–2008
Kumi-shi, KR12002