RE

Robert Erhardt

Philips: 8 patents #553 of 7,731Top 8%
NP North American Philips: 4 patents #76 of 645Top 15%
PA Philips Electronics North America: 3 patents #126 of 725Top 20%
Koniniklijke Philips N.V.: 1 patents #4,025 of 7,486Top 55%
Overall (All Time): #298,814 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9035571 Electronic ballast with dimming circuit William L. Keith, Raman Nair Harish Gopala Pillai, Jerzy Janczak, Ningliang Mi, Srinivasa Baddela 2015-05-19
7830095 LED assembly and module 2010-11-09
6853150 Light emitting diode driver Bernd Clauberg 2005-02-08
6853154 Open loop bi-level ballast control 2005-02-08
6713973 System and method of automatic cycling control for HID lamps 2004-03-30
6686703 High frequency electronic ballast Oscar Deurloo, Jerzy Janczak, Hendrik Anton Van Esveld, Winston Donald Couwenberg, Ronald Hans Van Der Voort 2004-02-03
6583588 System and method of automatic cycling control for HID lamps 2003-06-24
6507157 Electronic ballast system with dual power and dimming capability Steven H. Pilgrim, II, Raymond Kulka, Ching-Yao Hung 2003-01-14
6489729 Auxiliary lighting system for high intensity discharge lamp Ching-Yao Hung, Raymond Kulka, Seymour Perkins, III, Oscar Deurloo 2002-12-03
6373199 Reducing stress on ignitor circuitry for gaseous discharge lamps Oscar Deurloo 2002-04-16
6204614 Bi-level output electronic high intensity discharge (HID) ballast system 2001-03-20
5563473 Electronic ballast for operating lamps in parallel Charles B. Mattas 1996-10-08
5187414 Fluorescent lamp controllers Mark W. Fellows, John Wong, Edmond Toy, James A. Thomsen 1993-02-16
5111118 Fluorescent lamp controllers Mark W. Fellows, John Wong, Edmond Toy, James A. Thomsen 1992-05-05
5032767 High frequency oscillator-inverter with improved regenerative power supply Allan E. Brown 1991-07-16
4952848 Signal generating circuit for ballast control of discharge lamps 1990-08-28