TC

Tsung-Kai Chang

TT Topray Technologies: 5 patents #1 of 16Top 7%
IT ITRI: 1 patents #5,197 of 9,619Top 55%
LL Lite-On Electronics (Guangzhou) Limited: 1 patents #237 of 534Top 45%
LT Lite-On Technology: 1 patents #549 of 1,203Top 50%
Overall (All Time): #485,797 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12405468 VR equipment Yi-Wei Liu, Ying Liu 2025-09-02
12408253 Variable focus flashlight module Yi-Wei Liu 2025-09-02
10520436 Dynamic focusing confocal optical scanning system Golden Tiao, Jung-Po Chen, Chien-Chung Pien, Feng-Hsiang Lo, Jean-Dow Lee +2 more 2019-12-31
9473010 Voice coil motor array module Ying Chen 2016-10-18
8291442 Electromagnetic actuator of optical pickup head Ping-Ju Chang 2012-10-16
7519286 Apparatus of driving lens for focusing Yu-Fen Chung, Chin-Sung Liu 2009-04-14
7492537 Focus driving apparatus with impact resistance Yi-Jung Chen, Chin-Sung Liu 2009-02-17
7486594 Adjustable optical pickup actuator Chien-Kuo Chen, PAO-HENG SHEN 2009-02-03
7457062 Driving apparatus for fine-tuning focus Wen-Sheng Tai, Chin-Sung Liu, Yi-Jung Chen 2008-11-25
5777803 Objective lens for optical pick-up head of optical disk drive Jau-Jiu Ju, Tsung-Ming Yang 1998-07-07