Inventor · disambiguated record
Walter Tews
Also filed as: TEWS WALTER
54 granted patents·6 pending applications·1,250 citations·filing 1987–2022
99Inventor score
Files withLEE CHUNG-HOON15SEOUL SEMICONDUCTOR CO LTD14ROTH GUNDULA12TOYODA GOSEI KK6LEUCHSTOFFWERK BREITUNGEN GMBH3
Top patents by PatentIndex Score
60 records- 0199US8071988B2White light emitting device comprising a plurality of light emitting diodes with different peak emission wavelengths and a wavelength converterLEE CHUNG-HOON·Filed 2005·Granted Dec 6, 2011·251 cites·18 claims
- 0298US7679101B2Light emitting deviceTOYODA GOSEI KK·Filed 2006·Granted Mar 16, 2010·60 cites·14 claims
- 0398US6943380B2Light emitting device having phosphor of alkaline earth metal silicateLEUCHSTOFFWERK BREITUNGEN GMBH·Filed 2001·Granted Sep 13, 2005·183 cites·60 claims
- 0498US6809347B2Light source comprising a light-emitting elementLEUCHTSTOFFWERK BREITUNGEN·Filed 2001·Granted Oct 26, 2004·214 cites·16 claims
- 0597US7138660B2Light emitting deviceLEUCHSTOFFWERK BREITUNGEN GMBH·Filed 2005·Granted Nov 21, 2006·58 cites·13 claims
- 0696US7554129B2Light emitting deviceSEOUL SEMICONDUCTOR CO LTD·Filed 2004·Granted Jun 30, 2009·83 cites·18 claims
- 0794US10186642B2Light emitting device including RGB light emitting diodes and phosphorSEOUL SEMICONDUCTOR CO LTD·Filed 2015·Granted Jan 22, 2019·5 cites·11 claims
- 0894US8075802B2Luminescent materialROTH GUNDULA·Filed 2010·Granted Dec 13, 2011·11 cites·6 claims
- 0994US7157746B2Light emitting device having a divalent-europium-activated alkaline earth metal orthosilicate phosphorLEUCHSTOFFWERK BREITUNGEN GMBH·Filed 2004·Granted Jan 2, 2007·58 cites·27 claims
- 1093US8070984B2Luminescent materialROTH GUNDULA·Filed 2007·Granted Dec 6, 2011·18 cites·6 claims
- 1192US9614129B2Light emitting device having surface-modified luminophoresSEOUL SEMICONDUCTOR CO LTD·Filed 2015·Granted Apr 4, 2017·7 cites·10 claims
- 1292US9576939B2Light emitting device and lighting system having the sameROTH GUNDULA·Filed 2007·Granted Feb 21, 2017·17 cites·8 claims
- 1392US8581286B2Light emitting device having surface-modified silicate luminophoresLEE CHUNG HOON·Filed 2011·Granted Nov 12, 2013·13 cites·16 claims
- 1490US8089084B2Light emitting deviceROTH GUNDULA·Filed 2008·Granted Jan 3, 2012·14 cites·33 claims
- 1589US10672956B2Light emitting device including RGB light emitting diodes and phosphorSEOUL SEMICONDUCTOR CO LTD·Filed 2018·Granted Jun 2, 2020·3 cites·20 claims
- 1688US8945421B2Surface-modified silicate luminophoresLEE CHUNG HOON·Filed 2011·Granted Feb 3, 2015·8 cites·13 claims
- 1788US8066909B2Light emitting deviceROTH GUNDULA·Filed 2007·Granted Nov 29, 2011·11 cites·11 claims
- 1886US7259396B2Light source with a light-emitting elementTOYODA GOSEI KK·Filed 2006·Granted Aug 21, 2007·8 cites·13 claims
- 1986US7187011B2Light source with a light-emitting elementTOYODA GOSEI KK·Filed 2004·Granted Mar 6, 2007·23 cites·9 claims
- 2085US9196785B2Light emitting device having surface-modified quantum dot luminophoresSEOUL SEMICONDUCTOR CO LTD·Filed 2013·Granted Nov 24, 2015·7 cites·15 claims
- 2185US9139763B2Surface-modified phosphorsWINKLER HOLGER·Filed 2008·Granted Sep 22, 2015·12 cites·22 claims
- 2285US8070983B2Luminescent materialROTH GUNDULA·Filed 2004·Granted Dec 6, 2011·20 cites·18 claims
- 2384US10916684B2Light emitting device including RGB light emitting diodes and phosphorSEOUL SEMICONDUCTOR CO LTD·Filed 2019·Granted Feb 9, 2021·2 cites·9 claims
- 2483US8173042B2Strontium oxyorthosilicate phosphors having improved stability under a radiation load and resistance to atmospheric humidityLEE CHUNG HOON·Filed 2010·Granted May 8, 2012·5 cites·2 claims
- 2583US8137589B2Non stoichiometric tetragonal copper alkaline earth silicate phosphors and method of preparing the sameLEE CHUNG HOON·Filed 2008·Granted Mar 20, 2012·8 cites·10 claims
- 2683US8134165B2Light emitting device employing non-stoichiometric tetragonal alkaline earth silicate phosphorsLEE CHUNG HOON·Filed 2008·Granted Mar 13, 2012·10 cites·19 claims
- 2782US9312246B2Light emitting device and lighting system having the sameROTH GUNDULA·Filed 2011·Granted Apr 12, 2016·6 cites·15 claims
- 2881US8318044B2Light emitting deviceLEE CHUNG-HOON·Filed 2009·Granted Nov 27, 2012·7 cites·14 claims
- 2981US7382033B2Luminescent body and optical device including the sameTOYODA GOSEI KK·Filed 2003·Granted Jun 3, 2008·24 cites·17 claims
- 3080US11322484B2Light emitting device and lighting system having the sameSEOUL SEMICONDUCTOR CO LTD·Filed 2017·Granted May 3, 2022·2 cites·22 claims
- 3180US8252203B2Luminescent materialROTH GUNDULA·Filed 2011·Granted Aug 28, 2012·2 cites·9 claims
- 3279US9960324B2Light-emitting device having surface-modified luminophoresSEOUL SEMICONDUCTOR CO LTD·Filed 2017·Granted May 1, 2018·2 cites·8 claims
- 3379US8431954B2Light emitting device employing non-stoichiometric tetragonal alkaline earth silicate phosphorsLEE CHUNG HOON·Filed 2012·Granted Apr 30, 2013·4 cites·20 claims
- 3478US8847254B2Light emitting deviceROTH GUNDULA·Filed 2006·Granted Sep 30, 2014·8 cites·13 claims
- 3577US12009348B2Light emitting device and lighting system having the sameSEOUL SEMICONDUCTOR CO LTD·Filed 2022·Granted Jun 11, 2024·0 cites·20 claims
- 3676US9234129B2Surface-modified quantum dot luminophoresSEOUL SEMICONDUCTOR CO LTD·Filed 2013·Granted Jan 12, 2016·2 cites·6 claims
- 3776US8501040B2Non-stoichiometric tetragonal copper alkaline earth silicate phosphors and method of preparing the sameLEE CHUNG HOON·Filed 2012·Granted Aug 6, 2013·2 cites·12 claims
- 3875US9209162B2Light emitting device including RGB light emitting diodes and phosphorLEE CHUNG-HOON·Filed 2005·Granted Dec 8, 2015·3 cites·2 claims
- 3974US11605762B2Light emitting device including RGB light emitting diodes and phosphorSEOUL SEMICONDUCTOR CO LTD·Filed 2021·Granted Mar 14, 2023·0 cites·20 claims
- 4074US8883040B2Luminescent materialROTH GUNDULA·Filed 2012·Granted Nov 11, 2014·1 cites·4 claims
- 4174US8440106B2Strontium oxyorthosilicate phosphors having improved stability under a radiation load and resistance to atmospheric humidityLEE CHUNG HOON·Filed 2012·Granted May 14, 2013·2 cites·5 claims
- 4272US8535564B2Light emitting device employing luminescent substances with oxyorthosilicate luminophoresLEE CHUNG HOON·Filed 2010·Granted Sep 17, 2013·3 cites·20 claims
- 4372US6085971ALuminescent meta-borate substancesTEWS WALTER·Filed 1999·Granted Jul 11, 2000·32 cites·9 claims
- 4471US8308980B2Light emitting deviceLEE CHUNG HOON·Filed 2009·Granted Nov 13, 2012·3 cites·9 claims
- 4569US8703014B2Luminescent substances having Eu2+-doped silicate luminophoresLEE CHUNG HOON·Filed 2010·Granted Apr 22, 2014·1 cites·16 claims
- 4668US7828993B2Phosphor and optical device using sameTOYODA GOSEI KK·Filed 2003·Granted Nov 9, 2010·15 cites·17 claims
- 4765US8900482B2Light emitting deviceSEOUL SEMICONDUCTOR CO LTD·Filed 2012·Granted Dec 2, 2014·1 cites·6 claims
- 4865US7928466B2Light emitting semi-conductor diode (with high light output)MERCK PATENT GMBH·Filed 2006·Granted Apr 19, 2011·4 cites·18 claims
- 4958US10312420B2Light-emitting device having surface-modified luminophoresSEOUL SEMICONDUCTOR CO LTD·Filed 2018·Granted Jun 4, 2019·0 cites·9 claims
- 5058US8158028B2Luminescent materialROTH GUNDULA·Filed 2011·Granted Apr 17, 2012·0 cites·4 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →