Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6853140 | Mercury free discharge lamp with zinc iodide | Walter P. Lapatovich, Sharon L. Ernest, Susan L. Callahan | 2005-02-08 |
| 5023505 | Electric lamp with improved frame support and method of producing same | Paul Ratliff | 1991-06-11 |
| 4950954 | Metal halide discharge lamp with electrodes having unequal thoria contents | Edmund M. Passmore, Simone P. Bazin | 1990-08-21 |
| 4942330 | Lamp assembly utilizing shield and ceramic fiber mesh for containment | Thomas J. Sentementes, Roger A. Johnson | 1990-07-17 |
| 4916351 | Arc tube having crystalline press seal penetration suppression means and lamp employing same | William M. Keeffe | 1990-04-10 |
| 4888517 | Double-enveloped lamp having a shield surrounding a light-source capsule within a thick-walled outer envelope | William M. Keeffe, Joseph S. Kulik, Simone P. Bazin | 1989-12-19 |
| 4859899 | Metal-halide lamp having heat redistribution means | William M. Keeffe, Zeya K. Krasko, James C. Morris | 1989-08-22 |
| 4791334 | Metal-halide lamp having heat redistribution means | William M. Keeffe, Zeya K. Krasko, James C. Morris | 1988-12-13 |
| 4625141 | Low wattage metal halide discharge lamp electrically biased to reduce sodium loss | William M. Keeffe, Zeya K. Krasko | 1986-11-25 |
| 4620125 | Low wattage metal halide lamp with inverted domed sleeve | William M. Keeffe, Zeya K. Krasko | 1986-10-28 |
| 4498027 | Arc discharge lamp with improved starting capabilities, improved efficacy and maintenance, and line-of-sight arched arc tube for use therewith | Ronald C. Lekebush, Joseph S. Kulik | 1985-02-05 |
| 4488091 | High intensity discharge lamp | Martin E. Muzeroll, Robert P. Bonazoli, John F. Waymouth | 1984-12-11 |
| 4413206 | Metal halide arc discharge lamp having electrolysis prevention means | Joseph S. Kulik, Martin E. Muzeroll | 1983-11-01 |
| 4310774 | Arc discharge lamp containing scandium and scandium halide | Dale E. Work | 1982-01-12 |