Inventor

Chang Hwan Song

Inventor

Daegu, KR

Overview

5→

Patents

2013–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 5 as inventor

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

B82Yprimary

B82YSpecific uses or applications of nanostructures8%

F21SNon-portable lighting devices8%

F21VFunctional features or details of lighting devices or systems thereof8%

F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems8%

F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted8%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them8%

H01KElectric incandescent lamps8%

H05KPrinted circuits8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

G06FElectric digital data processing4%

PatentTitleYear

11,089,381Apparatus and method for simultaneous playback and backup of media in a web browser2021 10,991,742Image sensors2021 10,107,488Flexible LED substrate device2018 9,395,068'Flexible LED light source panel, and flexible LED lighting device for taking image by using the same panel'2016 8,387,117'Context-aware role-based access control system and control method thereof'2013

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2013Patents assigned to CHOI JUNG-HWAN (1)· patent assignee history

2013Patents assigned to EOM YOUNG-IK (1)· patent assignee history

2013Patents assigned to JANG HYUN-SU (1)· patent assignee history

2013Based in Jeollanam-do, KR· patent location history

2016–2018Patents assigned to SONG CHANG HWAN (2)· patent assignee history

2016–2018Based in Daegu, KR· patent location history

2021Patents assigned to HANWHA TECHWIN CO LTD (1)· patent assignee history

2021Based in Changwon-si, KR· patent location history

2021Based in Uiwang-si, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SONG CHANG HWANself	2	2016–2018
CHOI JUNG-HWAN	1	2013
EOM YOUNG-IK	1	2013
HANWHA TECHWIN CO LTD	1	2021
JANG HYUN-SU	1	2013

Locations

Location	Patents	Span
Daegu, KR	2	2016–2018
Changwon-si, KR	1	2021
Uiwang-si, KR	1	2021
Jeollanam-do, KR	1	2013