High-pressure mercury vapor discharge lamp
Patent 5109181 Issued on April 28, 1992. Estimated Expiration Date: 
April 28, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 28, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3382396 Metal halide discharge lamp Patent #: 4594529 InventorsApplicationNo. 339540 filed on 04/17/1989US Classes:313/571, Includes mercury in gas or vapor fill313/112, Polarizer or special ray transmission (e.g., filter)313/639Mercury vaporExaminersPrimary: Demeo, Palmer C.Attorney, Agent or FirmForeign Patent References
International ClassesH01J 061/20H01J 061/84 Foreign Application Priority Data1988-04-21 DEAbstractA high-pressure mercury vapor discharge lamp whose envelope two tungsten electrodes disposed therein of tungsten and a filling containing a rare gas, a quantity of mercury larger than 0.2 mg/mm3 at a mercury a pour pressure of more than 200 bar and at least one of the halogens chlorine, bromine or iodine in a quantity between 10-6 and 10-4 μmol/mm3. The wall load in operation is higher than 1 W/mm2. | |
