Inventor
Haifeng Duan
Inventor
Shenzhen, CN
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication24%
H04MTelephonic communication14%
H04WWireless communication networks14%
B05DProcesses for applying fluent materials to surfaces, in general5%
B41JTypewriters5%
B41MPrinting, duplicating, marking, or copying processes5%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms5%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
G06FElectric digital data processing5%
PatentTitleYear
10,933,654Process for isotropic structural colour printing and an apparatus for detecting a target substance in the gaseous phase202110,738,356Methods for obtaining and correcting biological sequence information20209,510,371'Method and apparatus for controlling service transmission'20169,288,828'Method, apparatus and system for accessing service by mobile station'20169,179,004'Method and apparatus for charging'20159,167,045'Method, apparatus and system for intercutting advertisement'20158,649,761'Service charging method, service charging system, network access server and protocol resolving device'20148,326,262'Advice of charging method, system and mobile terminal'2012Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2012–2016Patents assigned to HUAWEI TECH CO LTD (6)· patent assignee history
2012–2014Patents assigned to DUAN HAIFENG (2)· patent assignee history
2012Patents assigned to CHEN DAGANG (1)· patent assignee history
2012Patents assigned to LI YIMIN (1)· patent assignee history
2012–2016Based in Shenzhen, CN· patent location history
2016Based in Nanjing, CN· patent location history
2020Patents assigned to CYGNUS BIOSCIENCES (BEIJING) CO LTD (1)· patent assignee history
2020Based in Beijing, CN· patent location history
2021Based in Singapore, SG· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUAWEI TECH CO LTD | 6 | 2012–2016 |
| DUAN HAIFENGself | 2 | 2012–2014 |
| CHEN DAGANG | 1 | 2012 |
| CYGNUS BIOSCIENCES (BEIJING) CO LTD | 1 | 2020 |
| LI YIMIN | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shenzhen, CN | 5 | 2012–2016 |
| Singapore, SG | 1 | 2021 |
| Beijing, CN | 1 | 2020 |
| Nanjing, CN | 1 | 2016 |