Inventor
Liwei QUAN
Inventor
CN
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus21%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them21%
G01BMeasuring length, thickness or similar linear dimensions14%
A61BDiagnosis7%
G01DMeasuring not specially adapted for a specific variable7%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure7%
G01MTesting static or dynamic balance of machines or structures7%
H02NElectric machines not otherwise provided for7%
H04NPictorial communication, e.g. television7%
PatentTitleYear
12,181,646Optical system and projection device202411,822,062Ultra-short focus projecting optical system and projection device202311,561,462Optical system and projection device202311,527,967Rhomboid structured triboelectric nanogenerator based on built-in U-shaped support202211,402,293Electrostatic self-powered displacement grid sensor202211,143,496Electrostatic self-powered strain grid sensor2021Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2021–2022Patents assigned to UNIV ZHEJIANG (3)· patent assignee history
2021–2024Based in CN· patent location history
2023–2024Patents assigned to UNION OPTECH CO LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNION OPTECH CO LTD | 3 | 2023–2024 |
| UNIV ZHEJIANG | 3 | 2021–2022 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 6 | 2021–2024 |