Inventor
CHANG ZHAO
Inventor
CN
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus20%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes20%
G08GTraffic control systems20%
C04BLime, magnesia10%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds10%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%
Y02PClimate change mitigation technologies in the production or processing of goods10%
PatentTitleYear
12,449,592Polarization-maintaining dispersion-compensation microstructure fiber202512,391,615Solid polycarboxylate superplasticizer as well as preparation method therefor and use thereof202512,111,491Single-core polarization-maintaining dispersion compensation micro-structured optical fiber202411,928,752Allocation of dynamically batched service providers and service requesters202411,488,276Allocation of dynamically batched service providers and service requesters2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2024Patents assigned to GRABTAXI HOLDINGS PTE LTD (2)· patent assignee history
2022–2024Based in SG· patent location history
2024–2025Patents assigned to UNIV YANSHAN (2)· patent assignee history
2024–2025Based in CN· patent location history
2025Patents assigned to ANHUI CONCH MATERIAL TECH CO LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GRABTAXI HOLDINGS PTE LTD | 2 | 2022–2024 |
| UNIV YANSHAN | 2 | 2024–2025 |
| ANHUI CONCH MATERIAL TECH CO LTD | 1 | 2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 3 | 2024–2025 |
| SG | 2 | 2022–2024 |