Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8251520 | Optical display systems and methods | Alexei A. Erchak, John W. Graff | 2012-08-28 |
| 7934841 | Optical display systems and methods | Alexei A. Erchak, John W. Graff | 2011-05-03 |
| 7450311 | Optical display systems and methods | Alexei A. Erchak, John W. Graff | 2008-11-11 |
| 7274043 | Light emitting diode systems | Alexei A. Erchak, John W. Graff | 2007-09-25 |
| 7211831 | Light emitting device with patterned surfaces | Alexei A. Erchak, Chiyan Luo | 2007-05-01 |
| 7166870 | Light emitting devices with improved extraction efficiency | Alexei A. Erchak, Chiyan Luo | 2007-01-23 |
| 7105861 | Electronic device contact structures | Alexei A. Erchak, John W. Graff | 2006-09-12 |
| 7098589 | Light emitting devices with high light collimation | Alexei A. Erchak, Chiyan Luo | 2006-08-29 |
| 6831302 | Light emitting devices with improved extraction efficiency | Alexei A. Erchak, Chiyan Luo | 2004-12-14 |