|
| US4042855 | 12 juin 1975 | 16 août 1977 | Armstrong Cork Company | High frequency transistor ballast |
| US4060752 | 1 mars 1976 | 29 nov. 1977 | General Electric Company | Discharge lamp auxiliary circuit with dI/dt switching control |
| US4259614 | 20 juil. 1979 | 31 mars 1981 | | Electronic ballast-inverter for multiple fluorescent lamps |
| US4276496 | 18 juil. 1979 | 30 juin 1981 | | Gas discharge lamp employing a pulse generator with a double stage amplification circuit |
| US4291254 | 5 mars 1980 | 22 sept. 1981 | Patent-und-Gesellschaft fur elektrische Gluhlampen m.b.H. | Discharge lamp energization circuit, particularly for audio and supersonic frequency operation of high-pressure discharge lamps |
| US4392087 | 26 nov. 1980 | 5 juil. 1983 | Honeywell, Inc. | Two-wire electronic dimming ballast for gaseous discharge lamps |
| US4412154 | 25 juin 1981 | 25 oct. 1983 | Compagnie de Signaux et d'Entreprises Electriques | Start up frequency adjustment in an electronic power device for a discharge lamp |
| US4453109 | 27 mai 1982 | 5 juin 1984 | North American Philips Corporation | Magnetic transformer switch and combination thereof with a discharge lamp |
| US4511195 | 30 juin 1983 | 16 avr. 1985 | Beckman Instruments, Inc. | Device for starting and operating gas discharge tubes |
| US4553071 | 18 juil. 1983 | 12 nov. 1985 | Energies Technologies Corp. | Electronic ballast for fluorescent lamp |
| US4560908 | 27 mai 1982 | 24 déc. 1985 | North American Philips Corporation | High-frequency oscillator-inverter ballast circuit for discharge lamps |
| US4717863 | 18 févr. 1986 | 5 janv. 1988 | | Frequency modulation ballast circuit |
| US4798998 | 15 déc. 1986 | 17 janv. 1989 | Armstrong World Industries, Inc. | Electronically dimmed power limited lighting system |
| US4890039 | 21 nov. 1988 | 26 déc. 1989 | | Fluorescent lamp resonant ballast |
| US5049783 | 29 oct. 1990 | 17 sept. 1991 | Siemens Aktiengesellschaft | Electronic ballast device for fluorescent lamps |
| US5235254 | 26 mars 1991 | 10 août 1993 | PI Electronics Pte. Ltd. | Fluorescent lamp supply circuit |
| US5256939 | 18 mars 1992 | 26 oct. 1993 | | Magnetic electronic fluorescent lamp ballast |
| US5359263 | 20 nov. 1992 | 25 oct. 1994 | RemTech Company | Tuned LRC ballasting circuit for compact fluorescent lighting |
| US5438239 | 19 oct. 1993 | 1 août 1995 | | Fluorescent lamp ballast with light output control |
| US5747941 | 7 déc. 1995 | 5 mai 1998 | Energy Savings, Inc. | Electronic ballast that monitors direct current through lamp filaments |
| US6188183 | 11 juin 1999 | 13 févr. 2001 | | High intensity discharge lamp ballast |
| US6384544 | 15 nov. 2000 | 7 mai 2002 | Hatch Transformers, Inc. | High intensity discharge lamp ballast |
| US6495971 | 8 févr. 2000 | 17 déc. 2002 | Hatch Transformers, Inc. | High intensity discharge lamp ballast |
| US7589480 | 26 mai 2006 | 15 sept. 2009 | Greenwood Soar IP Ltd. | High intensity discharge lamp ballast |
| US7592753 | 8 janv. 2007 | 22 sept. 2009 | Access Business Group International LLC | Inductively-powered gas discharge lamp circuit |
| US7821208 | 8 janv. 2007 | 26 oct. 2010 | Access Business Group International LLC | Inductively-powered gas discharge lamp circuit |
| US7839098 | 30 juin 2008 | 23 nov. 2010 | Osram Sylvania Inc. | Microcontroller based ignition in high frequency ceramic metal halide lamps |
