Keyboard accessory for electronic device
US-12411558-B2 · Sep 9, 2025 · US
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Liu Robert U patents
Liu Robert U is listed as an inventor on 3 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Liu Robert U |
| Total patents | 3 |
| First publication | Jun 14, 2022 |
| Latest publication | Sep 9, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Keyboard accessory for electronic device
US-2024385697-A1 · Nov 21, 2024 · US
Stylus with touch input and compressive force sensors
US-11360616-B1 · Jun 14, 2022 · US
Recent patents
Latest publications not already listed above.
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Apple Inc | 3 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G06F3/0231 | 2 |
| G06F3/0426 | 2 |
| G06F3/0213 | 2 |
| G06F3/03547 | 1 |
| G06F3/0354 | 1 |