Inventor
Quan-Wen Du
Inventor
Sichuan, CN
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Wprimary
H04WWireless communication networks35%
H04NPictorial communication, e.g. television12%
G06KGraphical data reading6%
G06NComputing arrangements based on specific computational models6%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes6%
G06VImage or video recognition or understanding6%
G08BSignalling systems, e.g. personal calling systems6%
G16HHealthcare informatics, i.e. information and communication technology [ict] specially adapted for the handling or processing of medical or healthcare data6%
H04LTransmission of digital information, e.g. telegraphic communication6%
H04MTelephonic communication6%
PatentTitleYear
D0923117Toy202110,484,840Method and system for grouping communications between mobile communication devices201910,149,110Method and system for tracking a plurality of communication devices201810,083,359Method and device for incident situation prediction20189,967,908Method and device for reusing channel frequencies in direct mode20189,843,906'Apparatus and method for retrieving group messages'20179,654,939'Apparatus and method for incorporating multiple talk groups in a single call'2017Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017–2019Patents assigned to MOTOROLA SOLUTIONS INC (6)· patent assignee history
2017–2019Based in Sichuan, CN· patent location history
2017Based in Chengdu, CN· patent location history
2021Patents assigned to DU QINGSHAN (1)· patent assignee history
2021Based in Shantou, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MOTOROLA SOLUTIONS INC | 6 | 2017–2019 |
| DU QINGSHANself | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sichuan, CN | 5 | 2017–2019 |
| Shantou, CN | 1 | 2021 |
| Chengdu, CN | 1 | 2017 |