Inventor
Hongfei Cheng
Inventor
Beijing, CN
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Lprimary
H01LSemiconductor devices18%
H10DInorganic electric semiconductor devices14%
H10KOrganic electric solid-state devices14%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein11%
F21SNon-portable lighting devices7%
H05BElectric heating7%
F21VFunctional features or details of lighting devices or systems thereof4%
F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems4%
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 emitted4%
G06FElectric digital data processing4%
PatentTitleYear
11,004,873Array substrate and display device202110,991,917Array substrate and display device202110,950,676Array substrate, display panel and display device202110,943,543Array substrate, display panel and display device202110,937,849Array substrate and method of manufacturing the same, display panel and display device202110,886,343Pixel defining layer and method for manufacturing the same, display panel and method for manufacturing the same, and display device20218,188,669'Decorative lamp for displaying snowing or water-flowing pattern'20127,234,839'Lighting device for festival decoration'2007Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2007–2012Patents assigned to CHENG HON KWOK (2)· patent assignee history
2007Based in Hung Hom, Kowloon, HK· patent location history
2012Based in Kowloon, HK· patent location history
2021Patents assigned to BOE TECHNOLOGY GROUP CO LTD (6)· patent assignee history
2021Based in Beijing, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BOE TECHNOLOGY GROUP CO LTD | 6 | 2021 |
| CHENG HON KWOKself | 2 | 2007–2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Beijing, CN | 6 | 2021 |
| Kowloon, HK | 1 | 2012 |
| Hung Hom, Kowloon, HK | 1 | 2007 |