Inventor
Chang-Ming Cheng
Inventor
New Taipei, TW
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F21Sprimary
F21SNon-portable lighting devices30%
F21VFunctional features or details of lighting devices or systems thereof30%
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 emitted10%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems10%
LOC1910%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications10%
PatentTitleYear
10,938,310Seamless switching of resonant tanks in power converters by matching voltage gains at tank switchover20219,115,872'LED illumination device'20158,944,633'Lighting device recessively mounted in a platform'20158,920,003'Telescopic luminaire'2014D0393280'Combined writing instrument and roll-out map'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998–2015Patents assigned to Cheng chang-ming (4)· patent assignee history
1998–2014Based in Taipei, TW· patent location history
2014–2015Patents assigned to CHENG SHUN-CHUNG (3)· patent assignee history
2014–2015Patents assigned to LITE ON ELECTRONICS GUANGZHOU (3)· patent assignee history
2014–2015Patents assigned to LITE ON TECHNOLOGY CORP (3)· patent assignee history
2014–2015Patents assigned to WANG CHIH-HUANG (3)· patent assignee history
2015Based in New Taipei, TW· patent location history
2021Based in Hong Kong, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| Cheng chang-mingself | 4 | 1998–2015 |
| CHENG SHUN-CHUNG | 3 | 2014–2015 |
| LITE ON ELECTRONICS GUANGZHOU | 3 | 2014–2015 |
| LITE ON TECHNOLOGY CORP | 3 | 2014–2015 |
| WANG CHIH-HUANG | 3 | 2014–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| New Taipei, TW | 2 | 2015 |
| Taipei, TW | 2 | 1998–2014 |
| Hong Kong, CN | 1 | 2021 |