Inventor
Liangfeng Xu
Inventor
Coppell, TX, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps20%
H04MTelephonic communication13%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers13%
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general7%
B08BCleaning in general7%
F16CShafts7%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%
G06FElectric digital data processing7%
H01HElectric switches7%
H05KPrinted circuits7%
PatentTitleYear
10,967,407Conditioning chamber component20219,451,356'Multi-directivity sound device'20169,274,621'Apparatus including a sensor arrangement and methods of operating the same'20169,201,255'Apparatus, methods and computer programs for configuring output of a display'20158,116,508'Dual-mode loudspeaker'20127,822,446'Portable electronic device with compliant sliding hinge'20107,230,187'Printed wire board and associated mobile terminal'20076,570,961'X-ray source bearing housing assembly'20036,483,065'Methods and apparatus for current transmission through a circuit breaker'20026,377,658'Seal for liquid metal bearing assembly'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2003Patents assigned to GEN ELECTRIC (3)· patent assignee history
2002–2003Based in Irving, TX, US· patent location history
2002Based in West Chester, OH, US· patent location history
2007–2012Patents assigned to NOKIA CORP (3)· patent assignee history
2007–2016Based in Coppell, TX, US· patent location history
2012–2016Patents assigned to CAI CHENGUANG (3)· patent assignee history
2015–2016Patents assigned to NOKIA TECHNOLOGIES OY (3)· patent assignee history
2015–2016Patents assigned to XU LIANGFENG (3)· patent assignee history
2015–2016Based in Beijing, CN· patent location history
2021Based in Fremont, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CAI CHENGUANG | 3 | 2012–2016 |
| GEN ELECTRIC | 3 | 2002–2003 |
| NOKIA CORP | 3 | 2007–2012 |
| NOKIA TECHNOLOGIES OY | 3 | 2015–2016 |
| XU LIANGFENGself | 3 | 2015–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Coppell, Texas, US | 4 | 2007–2016 |
| Beijing, CN | 2 | 2015–2016 |
| Irving, Texas, US | 2 | 2002–2003 |
| Fremont, California, US | 1 | 2021 |
| West Chester, OH, US | 1 | 2002 |