Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7521872 | Integrated lamp with feedback and wireless control | — | 2009-04-21 |
| 7471062 | Wireless battery charging | — | 2008-12-30 |
| 7430512 | Method and system for selling lighting solutions | — | 2008-09-30 |
| 6989801 | Two-way presentation display system | — | 2006-01-24 |
| 6894675 | Seamless highlighting in LCD monitors and LCD-TV | Chin Chang | 2005-05-17 |
| 6888529 | Control and drive circuit arrangement for illumination performance enhancement with LED light sources | Chin Chang | 2005-05-03 |
| 6768047 | Autonomous solid state lighting system | Chin Chang | 2004-07-27 |
| 6756765 | System and method for charging users to recharge power supplies in portable devices | — | 2004-06-29 |
| 6731000 | Folded-flex bondwire-less multichip power package | Shatil Haque | 2004-05-04 |
| 6690349 | Scrolling backlight system for LCD TV | Subu MUTHU, Jeffrey A. Shimizu | 2004-02-10 |
| 6617795 | Multichip LED package with in-package quantitative and spectral sensing capability and digital signal output | — | 2003-09-09 |
| 6552491 | Fluorescent lamp with integral circuitry | Jose Azevedo | 2003-04-22 |
| 6541925 | Resonant converter circuit with suppression of transients during changes in operating condition | Chin Chang, Joseph Chang | 2003-04-01 |
| 6509696 | Method and system for driving a capacitively coupled fluorescent lamp | Chin Chang | 2003-01-21 |
| 6489731 | Power supply and/or ballast system controlled by desired load power spectrum | David A. Cammack | 2002-12-03 |
| 6483252 | Optimal FM for HF operation of high intensity discharge (HID) lamps | — | 2002-11-19 |
| 6441558 | White LED luminary light control system | Subramanian Muthu, Chin Chang | 2002-08-27 |
| 6407935 | High frequency electronic ballast with reactive power compensation | Chin Chang | 2002-06-18 |
| 6400584 | Two stage switching power supply for connecting an AC power source to a load | Juan Antonio Sabate | 2002-06-04 |
| 6373725 | Reconfigurable converter for multiple-level input-line voltages | Chin Chang, Adan F. Hernandez | 2002-04-16 |
| 6369525 | White light-emitting-diode lamp driver based on multiple output converter with output current mode control | Chin-Ho Chang, Subramanian Muthu | 2002-04-09 |
| 6353295 | Lamp electronic ballast with a piezoelectric cooling fan | Shri Sridhar, Vivek Mehrotra, Juan Antonio Sabate, Nicolaas Bernardus Roozen | 2002-03-05 |
| 6339314 | Battery charger circuit with low standby power dissipation | — | 2002-01-15 |
| 6326740 | High frequency electronic ballast for multiple lamp independent operation | Chin Chang | 2001-12-04 |
| 6271633 | High power factor electronic ballast with fully differential circuit topology | Eric Shen | 2001-08-07 |