|
| US3958145 | 14 Feb 1974 | 18 May 1976 | U.S. Philips Corporation | High pressure, mercury vapor, metal halide discharge lamp |
| US4135110 | 8 Sep 1977 | 16 Ene 1979 | Thorn Electrical Industries Limited | Electrical discharge lamp |
| US4171498 | 25 Nov 1977 | 16 Oct 1979 | Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH | High pressure electric discharge lamp containing metal halides |
| US4197480 | 11 Sep 1978 | 8 Abr 1980 | Westinghouse Electric Corp. | Reflector-type hid sodium vapor lamp unit with dichroic reflector |
| US4298813 | 23 Oct 1978 | 3 Nov 1981 | General Electric Company | High intensity discharge lamps with uniform color |
| US4360758 | 23 Ene 1981 | 23 Nov 1982 | Westinghouse Electric Corp. | High-intensity-discharge lamp of the mercury-metal halide type which efficiently illuminates objects with excellent color appearance |
| US4581557 | 14 Oct 1980 | 8 Abr 1986 | General Electric Company | Stabilized high intensity discharge lamp |
| US4717852 | 26 Nov 1985 | 5 Ene 1988 | Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH | Low-power, high-pressure discharge lamp |
| US4929869 | 10 Nov 1988 | 29 May 1990 | Kabushiki Kaisha Toshiba | High intensity discharge lamp containing iron and silver in the arc tube filling |
| US5229686 | 9 Oct 1991 | 20 Jul 1993 | GTE Products Corporation | Mercury vapor discharge lamp containing means for reducing mercury leaching |
| US5434473 | 4 Mar 1994 | 18 Jul 1995 | Tungsram Co., Ltd. | High pressure sodium vapor discharge lamp |
| US5438244 | 2 Sep 1994 | 1 Ago 1995 | General Electric Company | Use of silver and nickel silicide to control iodine level in electrodeless high intensity discharge lamps |
| US6107742 | 1 Abr 1998 | 22 Ago 2000 | Matsushita Electronics Corporation | Metal halide lamp |
| US6362571 | 2 Abr 1999 | 26 Mar 2002 | U.S. Philips Corporation | Metal-halide lamp with ionizable filling and oxygen dispenser to avoid blackening and extend lamp life |