Inventor
Qiankun Ma
Inventor
Ningbo, CN
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC19primary
LOC1973%
H04LTransmission of digital information, e.g. telegraphic communication7%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers7%
H04WWireless communication networks7%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use7%
PatentTitleYear
10,932,043Wireless audio system and method for wirelessly communicating audio information using the same2021D0609746'Marker'2010D0609747'Pen'2010D0605700'Pen'2009D0605696'Highlighter'2009D0602088'Pen'2009D0602083'Pen'2009D0597598'Highlighter'2009D0595351'Highlighter'2009D0580489'Dual-tip highlighter'2008D0572760'Marker'2008D0572759'Pen'2008Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2008–2010Patents assigned to BEIFA GROUP CO LTD (11)· patent assignee history
2008–2010Based in Ningbo, CN· patent location history
2021Patents assigned to BESTECHNIC SHANGHAI CO LTD (1)· patent assignee history
2021Based in Shanghai, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BEIFA GROUP CO LTD | 11 | 2008–2010 |
| BESTECHNIC SHANGHAI CO LTD | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ningbo, CN | 11 | 2008–2010 |
| Shanghai, CN | 1 | 2021 |