Patents by Inventor Ronald A. Madia

Ronald A. Madia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High-efficiency discharge lamp which incorporates a small molar excess of alkali metal halide as compared to scandium halide
    Patent number: 3979624
    Abstract: High-intensity arc-discharge (HID) device of the metal-halide additive type incorporates as essential discharge-sustaining constituents mercury and inert ionizable starting gas and also sodium and/or lithium iodides and/or bromides as well as scandium iodide and/or bromide. The molar ratio of alkali metal halide to scandium halide is from about 1.7:1 to about 5:1 and this greatly enhances the device efficacy for the generation of visible light, which can be enhanced by as much as 32 percent.
    Type: Grant
    Filed: April 29, 1975
    Date of Patent: September 7, 1976
    Assignee: Westinghouse Electric Corporation
    Inventors: Chi-sheng Liu, Chikara Hirayama, Robert J. Zollweg, Ronald A. Madia