Ice rink and method for making ice surface of ice rink
US-2023075532-A1 · Mar 9, 2023 · US
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Dong Chang patents
Dong Chang is listed as an inventor on 5 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Dong Chang |
| Total patents | 5 |
| First publication | Dec 30, 2021 |
| Latest publication | Mar 9, 2023 |
Notable patents
Publications ranked by popularity score, then publication date.
Display module, display system and control method for display system
US-11475853-B2 · Oct 18, 2022 · US
Display module, display system and control method for display system
US-2022254313-A1 · Aug 11, 2022 · US
Backlight module, display module and display device
US-11366264-B2 · Jun 21, 2022 · US
Backlight module, display module and display device
US-2021405285-A1 · Dec 30, 2021 · US
Recent patents
Latest publications not already listed above.
No data yet.
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Beijing Boe Optoelectronics Tech Co Ltd | 4 |
| Boe Technology Group Co Ltd | 4 |
| Beijing Boe Technology Dev Co Ltd | 1 |
| Univ Tsinghua | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G02F2201/58 | 2 |
| G02F1/13336 | 2 |
| G02F1/133308 | 2 |
| G02F1/1333 | 2 |
| G02F1/133606 | 2 |