Inventor · disambiguated record
Yian Chang
Also filed as: CHANG YIAN · CHANG YIAN LENG
31 granted patents·2 pending applications·2,395 citations·filing 1997–2011
98Inventor score
Top patents by PatentIndex Score
33 records- 0199US7638951B2Plasma lamp with stable feedback amplification and method thereforLUXIM CORP·Filed 2006·Granted Dec 29, 2009·350 cites·25 claims
- 0299US7372209B2Microwave energized plasma lamp with dielectric waveguideLUXIM CORP·Filed 2004·Granted May 13, 2008·130 cites·40 claims
- 0399US6922021B2Microwave energized plasma lamp with solid dielectric waveguideLUXIM CORP·Filed 2003·Granted Jul 26, 2005·142 cites·46 claims
- 0498US7994721B2Plasma lamp and methods using a waveguide body and protruding bulbLUXIM CORP·Filed 2006·Granted Aug 9, 2011·522 cites·15 claims
- 0598US7429818B2Plasma lamp with bulb and lamp chamberLUXIM CORP·Filed 2004·Granted Sep 30, 2008·110 cites·32 claims
- 0698US7391158B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Jun 24, 2008·109 cites·38 claims
- 0798US7362054B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Apr 22, 2008·109 cites·47 claims
- 0898US7362056B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Apr 22, 2008·123 cites·21 claims
- 0998US7362055B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Apr 22, 2008·109 cites·25 claims
- 1098US7358678B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Apr 15, 2008·107 cites·45 claims
- 1198US7348732B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2004·Granted Mar 25, 2008·123 cites·24 claims
- 1298US6737809B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2001·Granted May 18, 2004·183 cites·35 claims
- 1394US7498747B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Mar 3, 2009·12 cites·16 claims
- 1492US7940007B2Plasma lamp with dielectric waveguide integrated with transparent bulbLUXIM CORP·Filed 2008·Granted May 10, 2011·8 cites·17 claims
- 1592US7525253B2Microwave energized plasma lamp with dielectric waveguideLUXIM CORP·Filed 2005·Granted Apr 28, 2009·12 cites·23 claims
- 1691US8110988B2Plasma lamp with dielectric waveguideESPIAU FREDERICK M·Filed 2011·Granted Feb 7, 2012·6 cites·18 claims
- 1789US7791280B2Plasma lamp using a shaped waveguide bodyLUXIM CORP·Filed 2006·Granted Sep 7, 2010·10 cites·30 claims
- 1887US7919923B2Plasma lamp with dielectric waveguideLUXIM CORP·Filed 2008·Granted Apr 5, 2011·4 cites·5 claims
- 1987US7518315B2Microwave energized plasma lamp with solid dielectric waveguideLUXIM CORP·Filed 2006·Granted Apr 14, 2009·6 cites·9 claims
- 2083US8203272B2Plasma lamp with dielectric waveguide integrated with transparent bulbCHANG YIAN·Filed 2011·Granted Jun 19, 2012·4 cites·21 claims
- 2181US6151406AMethod and apparatus for locating ball grid array packages from two-dimensional image dataCOGNEX CORP·Filed 1997·Granted Nov 21, 2000·73 cites·19 claims
- 2278US8125153B2Microwave energized plasma lamp with dielectric waveguideESPIAU FREDERICK M·Filed 2009·Granted Feb 28, 2012·2 cites·20 claims
- 2377US7791278B2High brightness plasma lampLUXIM CORP·Filed 2006·Granted Sep 7, 2010·8 cites·28 claims
- 2476US7888874B2Plasma lamp with conductive material positioned relative to RF feedLUXIM CORP·Filed 2007·Granted Feb 15, 2011·5 cites·26 claims
- 2575US6324299B1Object image search using sub-modelsCOGNEX CORP·Filed 1998·Granted Nov 27, 2001·97 cites·9 claims
- 2673US7855511B2Plasma lamp with phase controlLUXIM CORP·Filed 2006·Granted Dec 21, 2010·5 cites·19 claims
- 2770US6396942B1Method and apparatus for locating ball grid array packages from two-dimensional image dataCOGNEX CORP·Filed 2000·Granted May 28, 2002·15 cites·6 claims
- 2865US8022607B2Plasma lamp with small power coupling surfaceLUXIM CORP·Filed 2006·Granted Sep 20, 2011·2 cites·41 claims
- 2962US7906910B2Plasma lamp with conductive material positioned relative to RF feedLUXIM CORP·Filed 2006·Granted Mar 15, 2011·1 cites·26 claims
- 3060US8350480B2Plasma lamp using a shaped waveguide bodyLUXIM CORP·Filed 2010·Granted Jan 8, 2013·1 cites·29 claims
- 3149US2011298354A1Plasma lamp with small power coupling surfaceESPIAU FREDERICK M·Filed 2011·Application pending·0 cites
- 3249US2011221340A1Plasma lamp with conductive material positioned relative to rf feedLUXIM CORP·Filed 2011·Application pending·0 cites
- 3333US6252986B1Locating an image of an object having a concentric profileCOGNEX CORP·Filed 1998·Granted Jun 26, 2001·7 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Yian Chang 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 →