Inventor
ChengYen Liu
Inventor
Shenzhen, CN
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Fprimary
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices50%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers50%
PatentTitleYear
10,331,026Photographic mask and method for making same2019Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2019Patents assigned to AAC ACOUSTIC TECH SHENZHEN CO LTD (1)· patent assignee history
2019Patents assigned to LIU CHENGYEN (1)· patent assignee history
2019Patents assigned to MENG ZHENKUI (1)· patent assignee history
2019Patents assigned to WANG LINLIN (1)· patent assignee history
2019Patents assigned to ZHOU YE (1)· patent assignee history
2019Based in Shenzhen, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AAC ACOUSTIC TECH SHENZHEN CO LTD | 1 | 2019 |
| LIU CHENGYENself | 1 | 2019 |
| MENG ZHENKUI | 1 | 2019 |
| WANG LINLIN | 1 | 2019 |
| ZHOU YE | 1 | 2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shenzhen, CN | 1 | 2019 |