Inventor
Changhua Zhang
Inventor
CN
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Vprimary
G01VGeophysics18%
G06FElectric digital data processing18%
H04NPictorial communication, e.g. television18%
F21SNon-portable lighting devices9%
F21VFunctional features or details of lighting devices or systems thereof9%
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 emitted9%
G06TImage data processing or generation, in general9%
LOC149%
PatentTitleYear
12,561,105Online electronic whiteboard content synchronization and sharing system202612,348,890Seamless video switching method and system in video matrix202512,348,797Method for implementing coding and decoding of YUV444 image on basis of H.265202512,320,941Methods and apparatuses for seismic characterization of subsurface formations202512,092,276Lamp having dynamic starry sky effect2024D1012879Megaphone for playground202411,281,825Computer-implemented method for high speed multi-source loading and retrieval of wavefields employing finite difference models2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to CHINA PETROLEUM & CHEM CORP (2)· patent assignee history
2022Patents assigned to Sinopec Tech Houston (1)· patent assignee history
2022–2025Based in US· patent location history
2024–2026Patents assigned to GUANGDONG BAOLUN ELECTRONICS CO LTD (4)· patent assignee history
2024Patents assigned to QITELE GROUP CO LTD (1)· patent assignee history
2024–2026Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GUANGDONG BAOLUN ELECTRONICS CO LTD | 4 | 2024–2026 |
| CHINA PETROLEUM & CHEM CORP | 2 | 2022–2025 |
| QITELE GROUP CO LTD | 1 | 2024 |
| Sinopec Tech Houston | 1 | 2022 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 5 | 2024–2026 |
| US | 2 | 2022–2025 |