Vision-testing method and device thereof
US-12408832-B2 · Sep 9, 2025 · US
Liu Wei holds 44 patents in our database, with recent filings and technology areas summarized below.
| Metric | Value |
|---|---|
| Total patents | 44 |
| Recent patents | 8 |
| First publication | Jan 13, 2015 |
| Latest publication | Sep 9, 2025 |
Year-over-year patent counts for this assignee.
Latest publications where this party is an assignee.
US-12408832-B2 · Sep 9, 2025 · US
US-D1073477-S · May 6, 2025 · US
US-D1072940-S · Apr 29, 2025 · US
US-12263135-B2 · Apr 1, 2025 · US
US-D1065335-S · Mar 4, 2025 · US
Representative or frequently cited publications from precomputed assignee stats.
US-12408832-B2 · Sep 9, 2025 · US
US-D1073477-S · May 6, 2025 · US
US-D1072940-S · Apr 29, 2025 · US
US-12263135-B2 · Apr 1, 2025 · US
US-D1065335-S · Mar 4, 2025 · US
Most common classification codes in this portfolio.
| CPC | Patents |
|---|---|
| A61H5/00 | 4 |
| C08F126/06 | 2 |
| C08F4/38 | 2 |
| C08F6/003 | 2 |
| C08F24/00 | 2 |
Mapped technology topics for this assignee.
| Technology | Patents |
|---|---|
| Physics | 12 |
| Chemistry & Metallurgy | 11 |
| Human Necessities | 10 |
| Electricity | 9 |
| Operations & Transport | 5 |
| Mechanical Engineering | 1 |
| Cross-Sectional Technologies | 1 |