Inventor

Wei Chang

Inventor

New Taipei, TW

Overview

24→

Patents

2005–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 24 as inventor

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

H05Bprimary

H05BElectric heating30%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications17%

F21VFunctional features or details of lighting devices or systems thereof7%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h107%

F21KNon-electric light sources using luminescence4%

F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted4%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters4%

H10HInorganic light-emitting semiconductor devices having potential barriers4%

A47GHousehold or table equipment2%

F21SNon-portable lighting devices2%

PatentTitleYear

10,645,781High-voltage linear drive and memory dimming LED lighting device2020 10,278,255Light-emitting device with digital control of color temperature modulation and application thereof2019 9,985,009Manufacturing method of LED light emitting device2018 D0794866'LED bulb lamp cover'2017 9,674,908'Secondary-side bucking and current-stabilizing flyback power converter'2017 9,572,221'Auto-sensing dimming lamp'2017 9,544,963'Self-excited TRIAC dimming circuit'2017 9,485,824'Purely resistive dimming circuit'2016 9,435,491'LED lead frame and lamp thereof'2016 9,418,523'Intelligent wireless doorbell alarm system'2016 9,198,243'LED driver circuit for supplying TRIAC holding current by using controllable current source'2015 9,167,645'Driver circuit for improving LED flickers'2015 9,072,149'LED driving device with open circuit protection and color temperature and brightness adjustment'2015 D0728480'LED lamp holder'2015 8,941,323'Ceiling lamp adopting non-separating driver circuit'2015 8,941,328'Variable power dimming control circuit'2015 8,896,223'Light emitting diode driving device'2014 8,853,980'Soft-switching control circuit for DC motor'2014 8,766,560'Adaptive light emitting diode dimming driving circuit'2014 8,710,745'LED drive circuit'2014 8,629,638'Lock protection and standby mode control circuit of motor driving apparatus'2014 8,022,434'Light-emitting diode'2011 7,576,403'Method of manufacturing infrared rays receiver and structure thereof'2009 6,927,759'Optical mouse with uniform light projection'2005

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2020Patents assigned to UNITY OPTO TECHNOLOGY CO LTD (22)· patent assignee history

2005–2011Based in San Chung, TW· patent location history

2014Patents assigned to CHANG CHIA-JUNG (2)· patent assignee history

2014Patents assigned to CHANG WEI-LINE (2)· patent assignee history

2014Patents assigned to NIKO SEMICONDUCTOR CO LTD (2)· patent assignee history

2014Patents assigned to CHANG WEI (1)· patent assignee history

2014–2020Based in New Taipei, TW· patent location history

2014Based in Taichung, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNITY OPTO TECHNOLOGY CO LTD	22	2005–2020
CHANG CHIA-JUNG	2	2014
CHANG WEI-LINEself	2	2014
NIKO SEMICONDUCTOR CO LTD	2	2014
CHANG WEIself	1	2014

Locations

Location	Patents	Span
New Taipei, TW	19	2014–2020
San Chung, TW	3	2005–2011
Taichung, TW	2	2014