Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8241467 | Making a cathode structure for OLEDs | Joseph K. Madathil | 2012-08-14 |
| 7309956 | Top-emitting OLED device with improved-off axis viewing performance | Joseph K. Madathil, Joel D. Shore | 2007-12-18 |
| 7157156 | Organic light emitting device having improved stability | Joseph K. Madathil, Liang-Sheng Liao | 2007-01-02 |
| 7049741 | Organic light emitting diode with improved light emission through substrate | Joseph K. Madathil | 2006-05-23 |
| 7002293 | Organic light emitting diode with improved light emission through the cathode | Joseph K. Madathil | 2006-02-21 |
| 6875320 | Highly transparent top electrode for OLED device | Joseph K. Madathil | 2005-04-05 |
| 6797129 | Organic light-emitting device structure using metal cathode sputtering | Joseph K. Madathil | 2004-09-28 |
| 6794061 | Organic electroluminescent device having an adhesion-promoting layer for use with a magnesium cathode | Liang-Sheng Liao, Joseph K. Madathil, Ching W. Tang | 2004-09-21 |
| 6765349 | High work function metal alloy cathode used in organic electroluminescent devices | Liang-Sheng Liao, Joseph K. Madathil | 2004-07-20 |
| 6579629 | Cathode layer in organic light-emitting diode devices | Ching W. Tang, Joseph K. Madathil | 2003-06-17 |
| 6558820 | High contrast light-emitting diode devices | Joseph K. Madathil | 2003-05-06 |
| 6551725 | Inorganic buffer structure for organic light-emitting diode devices | Joseph K. Madathil | 2003-04-22 |
| 6172459 | Electron-injecting layer providing a modified interface between an organic light-emitting structure and a cathode buffer layer | Liang-Sun Hung, Ching W. Tang | 2001-01-09 |
| 6168901 | Recordable optical element using low absorption materials | Yuan-Sheng Tyan, Kee-Chuan Pan, George R. Olin | 2001-01-02 |
| 5972458 | Optical recording element with an interfacial layer between the recording layer and the reflecting layer | Fridrich Vazan | 1999-10-26 |
| 5879773 | Recordable optical disks with dielectric interlayer | Tukaram K. Hatwar, Yuan-Sheng Tyan | 1999-03-09 |
| 5843553 | High performance media for optical recording | George R. Olin, Yuan-Sheng Tyan, Fridrich Vazan | 1998-12-01 |
| 5770293 | Method of forming recordable optical element using low absorption materials | Fridrich Vazan | 1998-06-23 |
| 5733623 | Recording media for recordable element | Fridrich Vazan, George R. Olin, Yuan-Sheng Tyan | 1998-03-31 |
| 5725741 | Method of forming recordable optical element using low absorption materials | Fridrich Vazan | 1998-03-10 |
| 5585158 | Recordable optical element using low absorption materials | Fridrich Vazan | 1996-12-17 |
| 5312664 | Optical recording media | — | 1994-05-17 |
| 5234803 | Optical recording media | — | 1993-08-10 |
| 5055331 | Phase-change optical recording media | — | 1991-10-08 |
| 4904577 | Optical recording element and alloy for use therein | Yuan-Sheng Tyan, Fridrich Vazan | 1990-02-27 |