Inventor · disambiguated record
Zu-Wen Chao
Also filed as: CHAO ZU W · CHAO ZU-WEN
18 granted patents·1 pending application·140 citations·filing 1990–2005
94Inventor score
Top patents by PatentIndex Score
19 records- 0170US5745465ADigital video disc pick-up head systemIND TECH RES INST·Filed 1997·Granted Apr 28, 1998·23 cites·18 claims
- 0268US5442415AArmless transparency projectorIND TECH RES INST·Filed 1994·Granted Aug 15, 1995·12 cites·8 claims
- 0364US5748602ASingle-lens optical pick-up head for accessing a DVD disc and a CD disc by switching between two optical statesIND TECH RES INST·Filed 1996·Granted May 5, 1998·19 cites·17 claims
- 0461US7190654B2Disc burner and its control methodIND TECH RES INST·Filed 2004·Granted Mar 13, 2007·5 cites·10 claims
- 0559US6341116B1Compact optical pick-up head employing non-diffractive elementIND TECH RES INST·Filed 1999·Granted Jan 22, 2002·14 cites·7 claims
- 0655US5712843AMiniature optical access head apparatusIND TECH RES INST·Filed 1996·Granted Jan 27, 1998·12 cites·13 claims
- 0753US6415400B1Method of managing defect areas on an erasable optical disc in a dynamic mannerIND TECHNICAL RES INST·Filed 1999·Granted Jul 2, 2002·12 cites·8 claims
- 0853US5748574ADouble focal-point magneto-optic pick-up headIND TECH RES INST·Filed 1997·Granted May 5, 1998·11 cites·10 claims
- 0951US7376342B2Method of determining disc type for disc burnersIND TECH RES INST·Filed 2004·Granted May 20, 2008·1 cites·14 claims
- 1051US6483799B1Rewritable DVD-RAM discIND TECH RES INST·Filed 2000·Granted Nov 19, 2002·1 cites·16 claims
- 1144US2006140071A1Objective lens optical part for optical pickup device and focusing method using the sameHWANG YU-TASANG·Filed 2005·Application pending·0 cites
- 1241US7197163B2Watermark embedding method based on DCT subband image charactersIND TECH RES INST·Filed 2003·Granted Mar 27, 2007·2 cites·15 claims
- 1340US7383585B2Optical discs with controllable access times and method of the sameIND TECH RES INST·Filed 2004·Granted Jun 3, 2008·0 cites·10 claims
- 1439US6343059B1Reading-writing pickup headIND TECH RES INST·Filed 1999·Granted Jan 29, 2002·4 cites·3 claims
- 1539US5715102ABeam shaper device for optical read/write headsIND TECH RES INST·Filed 1997·Granted Feb 3, 1998·4 cites·5 claims
- 1639US5278811AMagneto-optic recording and playback systemIND TECH RES INST·Filed 1992·Granted Jan 11, 1994·4 cites·3 claims
- 1736US6370104B1DVD reading-writing pick-up head employing multiple wavelengthsIND TECH RES INST·Filed 1999·Granted Apr 9, 2002·6 cites·5 claims
- 1835US5146515AStructure of lens combination for optical fiber fine displacement detecting systemIND TECH RES INST·Filed 1990·Granted Sep 8, 1992·6 cites·6 claims
- 1932US5438386ACoaxial master-slave lens photographing apparatusIND TECH RES INST·Filed 1993·Granted Aug 1, 1995·4 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Zu-Wen Chao files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →