Inventor

Sing-Long Du

Inventor

Taipei, TW

Overview

7→

Patents

1995–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 7 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

LOC14primary

LOC1427%

H03FAmplifiers13%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers13%

G01RMeasuring electric variables7%

H01RElectrically-conductive connections7%

H03GControl of amplification7%

H03MCoding7%

H04NPictorial communication, e.g. television7%

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%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

PatentTitleYear

10,903,801Audio processing circuit and terminal device2021 10,893,360Pop sound suppression method, audio output circuit, and terminal2021 D0430549'Internet telephone'2000 D0428880'Personal digital computer'2000 D0417453'Modem'1999 D0416023'Modem'1999 5,393,246'Transmission power testing bar of cable television system'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2000Based in Taipei, TW· patent location history

1999–2000Patents assigned to ASKEY COMPUTER CORP (4)· patent assignee history

2021Patents assigned to HUAWEI TECH CO LTD (2)· patent assignee history

2021Based in Chengdu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASKEY COMPUTER CORP	4	1999–2000
HUAWEI TECH CO LTD	2	2021

Locations

Location	Patents	Span
Taipei, TW	5	1995–2000
Chengdu, CN	2	2021