Inventor
Chin-Wang Tu
Inventor
Cupertino, CA, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F21Vprimary
F21VFunctional features or details of lighting devices or systems thereof16%
F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems13%
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 emitted13%
F21KNon-electric light sources using luminescence10%
H10HInorganic light-emitting semiconductor devices having potential barriers10%
F21SNon-portable lighting devices6%
G02BOptical elements, systems or apparatus6%
G09FDisplaying6%
H01RElectrically-conductive connections6%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications6%
PatentTitleYear
8,833,978'Traffic signal light device'20148,573,818'Luminaire with rotating and removable door'20138,511,865'LED luminaire light redirection shield'20138,111,011'LED luminaire with improved life and operation management'20127,488,086'Retrofitting of fluorescent tubes with light-emitting diode (LED) modules for various signs and lighting applications'20097,347,706'Light emitting diode (LED) based street light and other lighting applications'20087,172,324'Internally illuminated light panel with LED modules having light redirecting devices'20076,420,732'Light emitting diode of improved current blocking and light extraction structure'20025,041,883'Light emitting diodes with nitrogen doping'19914,864,369'P-side up double heterojunction AlGaAs light-emitting diode'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1991Patents assigned to HEWLETT PACKARD CO (2)· patent assignee history
1989–2014Based in Cupertino, CA, US· patent location history
2007–2014Patents assigned to LEOTEK ELECTRONICS CORP (7)· patent assignee history
2012–2013Patents assigned to TU CHIN-WANG (3)· patent assignee history
2012–2013Patents assigned to WANG SHIH CHANG (3)· patent assignee history
2013Patents assigned to HSU PIN-HAO (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LEOTEK ELECTRONICS CORP | 7 | 2007–2014 |
| TU CHIN-WANGself | 3 | 2012–2013 |
| WANG SHIH CHANG | 3 | 2012–2013 |
| HEWLETT PACKARD CO | 2 | 1989–1991 |
| HSU PIN-HAO | 2 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cupertino, California, US | 10 | 1989–2014 |