Inventor
Yong-dok Cha
Inventor
Suwon-si, KR
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus33%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them16%
H04NPictorial communication, e.g. television14%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein9%
F21VFunctional features or details of lighting devices or systems thereof5%
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 emitted5%
F21KNon-electric light sources using luminescence2%
F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems2%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure2%
G02CSpectacles2%
PatentTitleYear
11,073,434Manufacturing method for shear and normal force sensor202110,775,655Display apparatus and back light unit included therein202010,401,679Display apparatus201910,317,732Display apparatus with backlight unit20199,664,990'Illumination apparatus and projection-type image display apparatus having the same'20179,645,477'Polarization LED module, and lighting device and projector having the same'20179,154,774'Stereoscopic imaging system for forming three-dimensional stereoscopic images'20159,057,941'Reflection type screen for front projection display apparatus'20158,830,150'3D glasses and a 3D display apparatus'20148,414,129'Optical system'20138,395,601'Touch sensing system and display apparatus employing the same'20138,384,846'Backlight unit and liquid crystal display having the same'20138,026,468'Projection display apparatus comprising a spatial-beam changing unit which changes spatial positions of beams'20117,369,736'Light tunnel, uniform light illuminating device and projector employing the same'20087,145,728'Projection apparatus'20067,075,727'Projection lens system for image projection apparatus'20066,908,199'Optical illumination system and image projection system including the same'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005–2020Patents assigned to SAMSUNG ELECTRONICS CO LTD (16)· patent assignee history
2005–2020Based in Suwon-si, KR· patent location history
2006Based in Gyeonggi-do, KR· patent location history
2013–2014Patents assigned to CHA YONG-DOK (4)· patent assignee history
2013–2014Patents assigned to NHO JEONG-HO (3)· patent assignee history
2013Patents assigned to PARK JAE-HYUN (2)· patent assignee history
2013–2015Based in Hwaseong-si, KR· patent location history
2015Patents assigned to CHA YONG DOK (1)· patent assignee history
2015–2017Based in Yongin-si, KR· patent location history
2021Based in Seoul, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SAMSUNG ELECTRONICS CO LTD | 16 | 2005–2020 |
| CHA YONG-DOKself | 4 | 2013–2014 |
| NHO JEONG-HO | 3 | 2013–2014 |
| PARK JAE-HYUN | 2 | 2013 |
| CHA YONG DOKself | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Suwon-si, KR | 9 | 2005–2020 |
| Yongin-si, KR | 3 | 2015–2017 |
| Hwaseong-si, KR | 3 | 2013–2015 |
| Seoul, KR | 1 | 2021 |
| Gyeonggi-do, KR | 1 | 2006 |