Inventor
Yanfeng Li
Inventor
Beijing, CN
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein13%
F21VFunctional features or details of lighting devices or systems thereof6%
A61BDiagnosis4%
F21SNon-portable lighting devices4%
G02BOptical elements, systems or apparatus4%
G06FElectric digital data processing4%
H01FMagnets4%
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 systems4%
Y10TTechnical subjects covered by former us classification4%
A61CDentistry2%
PatentTitleYear
10,864,000Memory elastic wire sleeve for peeling maxillary sinus membrane202010,761,331Display panel and method for controlling the same, wearable VR display device202010,700,105Array substrate and method for manufacturing the same, display panel and display device202010,666,162Power supply system and power supply method202010,509,526Three-dimensional touch control structure and display device201910,301,053Automatic labeling apparatus and method and assembly jig and method201910,216,038Backplate, support frame for backlight unit, backlight unit and display device201910,151,579Array photoelectric sensor grating displacement detection system and method201810,139,555Backlight module and display device201810,047,933Elastically deformable frame with arc-shaped structures and backlight source comprising the same201810,049,797Low-neodymium, non-heavy-rare-earth and high performance magnet20189,892,832'Low-cost double-main-phase Ce permanent magnet alloy and its preparation method'20189,451,433'Device and method of driving multi-PDP data communication for mobile broadband device'20169,442,189'Multichannel UWB-based radar life detector and positioning method thereof'20168,146,435'Differential pressure gauge'20127,791,904'Inductance-voltage clamping full-bridge soft-switch circuit'20107,299,686'System and method for testing the compaction of soil'2007Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2010–2016Based in Shenzhen, CN· patent location history
2012–2020Patents assigned to LI YANFENG (3)· patent assignee history
2012–2020Based in Beijing, CN· patent location history
2016Based in Xi'an, CN· patent location history
2018–2020Patents assigned to BOE TECHNOLOGY GROUP CO LTD (7)· patent assignee history
2018–2019Patents assigned to HEFEI BOE DISPLAY LIGHTING CO (3)· patent assignee history
2018Patents assigned to CENTRAL IRON AND STEEL RES INSTITUTE (2)· patent assignee history
2018Based in Guangzhou, CN· patent location history
2019–2020Patents assigned to ORDOS YUANSHENG OPTOELECTRONICS CO LTD (3)· patent assignee history
2020Based in Shanghai, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BOE TECHNOLOGY GROUP CO LTD | 7 | 2018–2020 |
| HEFEI BOE DISPLAY LIGHTING CO | 3 | 2018–2019 |
| LI YANFENGself | 3 | 2012–2020 |
| ORDOS YUANSHENG OPTOELECTRONICS CO LTD | 3 | 2019–2020 |
| CENTRAL IRON AND STEEL RES INSTITUTE | 2 | 2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Beijing, CN | 11 | 2012–2020 |
| Shenzhen, CN | 2 | 2010–2016 |
| Shanghai, CN | 1 | 2020 |
| Guangzhou, CN | 1 | 2018 |
| Xi'an, CN | 1 | 2016 |