NL

Nai-Chi Lee

AM Allegro Microsystems: 10 patents #46 of 406Top 15%
Philips: 6 patents #792 of 7,731Top 15%
PA Philips Electronics North America: 6 patents #52 of 725Top 8%
NP North American Philips: 4 patents #76 of 645Top 15%
IR International Rectifier: 1 patents #252 of 432Top 60%
Overall (All Time): #137,544 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 25 most recent of 28 patents

Patent #TitleCo-InventorsDate
11272591 Constant power light emitting diode (LED) driver 2022-03-08
10412797 Apparatus and methods for converter mode and load configuration control 2019-09-10
9825528 Compensating for voltage changes in driver circuits Pranav Raval 2017-11-21
9781789 Apparatus and methods for LED control Vijay Mangtani 2017-10-03
9642203 Controlling dimming ratio and output ripple voltage Pranav Raval 2017-05-02
9615413 Driver circuit using dynamic regulation and related techniques Pranav Raval, Bassem Alnahas 2017-04-04
9538601 Method and apparatus for driving loads using a DC-DC converter Vijay Mangtani 2017-01-03
8994279 Method and apparatus to control a DC-DC converter Pranav Raval, Gregory Szczeszynski, Bassem Alnahas 2015-03-31
8610371 Circuitry to drive parallel loads sequentially Gregory Szczeszynski, Vijay Mangtani 2013-12-17
7787262 Capacitor charging methods and apparatus Vijay Mangtani, Tseng-Nan Tsai, John Humenick 2010-08-31
7449867 Multi-phase buck converter with a plurality of coupled inductors Wenkai Wu, George Schuellein 2008-11-11
6844702 System, method and apparatus for contact-less battery charging with dynamic control Demetri Giannopoulos, Qiong Li 2005-01-18
6788555 Regulation of bi-directional flyback converter Laurence Bourdillon, Demetri Giannopoulos 2004-09-07
6674655 Control method and apparatus for a flyback converter Demetri Giannopoulos, Qiong Li 2004-01-06
6563718 Capacitively coupled power converter Qiong Li 2003-05-13
6549432 Single-winding, multiple-output, bi-directional flyback converter Demetri Giannopoulos, Laurence Bourdillon 2003-04-15
6510066 Switch mode power supply and method for transferring data across a power transformer Demetri Giannopoulos, Qiong Li 2003-01-21
6400581 Method for adaptive control of switching losses in a drive circuit for active elements 2002-06-04
6341073 Multiple valley controller for switching circuit 2002-01-22
RE37500 System for partitioning and testing submodule circuits of an integrated circuit 2002-01-08
6011387 Analog autonomous test bus framework for testing integrated circuits on a printed circuit board 2000-01-04
5936446 PWM variable voltage load driver with peak voltage limitation 1999-08-10
5731701 Analog autonomous test bus framework for testing integrated circuits on a printed circuit board 1998-03-24
5721511 PWM variable voltage load driver 1998-02-24
5717329 Analog autonomous test bus framework for testing integrated circuits on a printed circuit board 1998-02-10