Inventor · disambiguated record
Tsung-Kai Chang
Also filed as: CHANG TSUNG-KAI
10 granted patents·6 pending applications·68 citations·filing 1996–2024
82Inventor score
Files withGUANGZHOU LUXVISIONS INNOVATION TECH LIMITED5TOPRAY TECHNOLOGIES INC4CHANG TSUNG-KAI2CADUCEUS BIOTECHNOLOGY INC1CHEN CHIEN-KUO1
Top patents by PatentIndex Score
16 records- 0188US5777803AObjective lens for optical pick-up head of optical disk driveIND TECH RES INST·Filed 1996·Granted Jul 7, 1998·62 cites·20 claims
- 0269US12408253B2Variable focus flashlight moduleGUANGZHOU LUXVISIONS INNOVATION TECH LIMITED·Filed 2024·Granted Sep 2, 2025·0 cites·5 claims
- 0363US12405468B2VR equipmentGUANGZHOU LUXVISIONS INNOVATION TECH LIMITED·Filed 2023·Granted Sep 2, 2025·0 cites·10 claims
- 0463US7457062B1Driving apparatus for fine-tuning focusTOPRAY TECHNOLOGIES INC·Filed 2008·Granted Nov 25, 2008·4 cites·3 claims
- 0559US7519286B2Apparatus of driving lens for focusingTOPRAY TECHNOLOGIES INC·Filed 2006·Granted Apr 14, 2009·2 cites·4 claims
- 0658US2025044543A1Periscopic image capturing device and focusing lens assembly thereofGUANGZHOU LUXVISIONS INNOVATION TECH LIMITED·Filed 2024·Application pending·0 cites
- 0753US9473010B2Voice coil motor array moduleLITE ON ELECTRONICS GUANGZHOU LTD·Filed 2014·Granted Oct 18, 2016·0 cites·8 claims
- 0853US2025365493A1Image sensing deviceGUANGZHOU LUXVISIONS INNOVATION TECH LIMITED·Filed 2024·Application pending·0 cites
- 0953US2025203060A1Three-dimensional imaging device and methodGUANGZHOU LUXVISIONS INNOVATION TECH LIMITED·Filed 2024·Application pending·0 cites
- 1044US7492537B2Focus driving apparatus with impact resistanceTOPRAY TECHNOLOGIES INC·Filed 2007·Granted Feb 17, 2009·0 cites·3 claims
- 1140US7486594B2Adjustable optical pickup actuatorTOPRAY TECHNOLOGIES INC·Filed 2006·Granted Feb 3, 2009·0 cites·4 claims
- 1239US2007245361A1Flat Cable Device For Optical Pickup HeadsCHEN CHIEN-KUO·Filed 2006·Application pending·0 cites
- 1336US2012120509A1Apparatus Of Auto-Focus Module And Assembly Method ThereofLIU CHIN-SUNG·Filed 2009·Application pending·0 cites
- 1430US10520436B2Dynamic focusing confocal optical scanning systemCADUCEUS BIOTECHNOLOGY INC·Filed 2017·Granted Dec 31, 2019·0 cites·15 claims
- 1528US8291442B2Electromagnetic actuator of optical pickup headCHANG TSUNG-KAI·Filed 2011·Granted Oct 16, 2012·0 cites·1 claims
- 1628US2012170440A1Electromagnetic actuator of optical pickup headCHANG TSUNG-KAI·Filed 2011·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →