Issued Patents All Time
Showing 1–25 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12009348 | Light emitting device and lighting system having the same | Walter Tews, Chung Hoon Lee | 2024-06-11 |
| 11605762 | Light emitting device including RGB light emitting diodes and phosphor | Chung Hoon Lee, Walter Tews | 2023-03-14 |
| 11322484 | Light emitting device and lighting system having the same | Walter Tews, Chung Hoon Lee | 2022-05-03 |
| 10916684 | Light emitting device including RGB light emitting diodes and phosphor | Chung Hoon Lee, Walter Tews | 2021-02-09 |
| 10672956 | Light emitting device including RGB light emitting diodes and phosphor | Chung Hoon Lee, Walter Tews | 2020-06-02 |
| 10312420 | Light-emitting device having surface-modified luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2019-06-04 |
| 10186642 | Light emitting device including RGB light emitting diodes and phosphor | Chung Hoon Lee, Walter Tews | 2019-01-22 |
| 9960324 | Light-emitting device having surface-modified luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2018-05-01 |
| 9614129 | Light emitting device having surface-modified luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2017-04-04 |
| 9576939 | Light emitting device and lighting system having the same | Walter Tews, Chung Hoon Lee | 2017-02-21 |
| 9312246 | Light emitting device and lighting system having the same | Walter Tews, Chung Hoon Lee | 2016-04-12 |
| 9234129 | Surface-modified quantum dot luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2016-01-12 |
| 9209162 | Light emitting device including RGB light emitting diodes and phosphor | Chung Hoon Lee, Walter Tews | 2015-12-08 |
| 9196785 | Light emitting device having surface-modified quantum dot luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2015-11-24 |
| 8963173 | Light emitting device having strontium oxyorthosilicate type phosphors | Chung Hoon Lee, Walter Tews, Detlef Starick | 2015-02-24 |
| 8945421 | Surface-modified silicate luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2015-02-03 |
| 8900482 | Light emitting device | Walter Tews, Chung Hoon Lee | 2014-12-02 |
| 8883040 | Luminescent material | Walter Tews, Chung Hoon Lee | 2014-11-11 |
| 8847254 | Light emitting device | Walter Tews, Chung Hoon Lee | 2014-09-30 |
| 8703014 | Luminescent substances having Eu2+-doped silicate luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2014-04-22 |
| 8581286 | Light emitting device having surface-modified silicate luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2013-11-12 |
| 8535564 | Light emitting device employing luminescent substances with oxyorthosilicate luminophores | Chung Hoon Lee, Walter Tews, Detlef Starick | 2013-09-17 |
| 8501040 | Non-stoichiometric tetragonal copper alkaline earth silicate phosphors and method of preparing the same | Chung Hoon Lee, Walter Tews, Stefan Tews | 2013-08-06 |
| 8440106 | Strontium oxyorthosilicate phosphors having improved stability under a radiation load and resistance to atmospheric humidity | Chung Hoon Lee, Walter Tews, Detlef Starick | 2013-05-14 |
| 8431954 | Light emitting device employing non-stoichiometric tetragonal alkaline earth silicate phosphors | Chung Hoon Lee, Walter Tews, Stefan Tews | 2013-04-30 |