Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6786791 | Quartz arc tube for a metal halide lamp and method of making same | William D. Koenigsberg, Miguel Galvez, Gregory Zaslavsky, Joseph V. Lima | 2004-09-07 |
| 6661173 | Quartz arc tube for a metal halide lamp and method of making same | William D. Koenigsberg, Miguel Galvez, Gregory Zaslavsky, Joseph V. Lima | 2003-12-09 |
| 6147440 | Low wattage lamp having formed arc tube in aluminosilicate outer jacket | John A. Scholz, Joseph V. Lima, Edward H. Nortrup, Peter R. Gagnon, Joseph P. Gallant | 2000-11-14 |
| 5694002 | Metal halide lamp with improved color characteristics | Nanu Brates | 1997-12-02 |
| 5225733 | Scandium halide and alkali metal halide discharge lamp | — | 1993-07-06 |
| 5057743 | Metal halide discharge lamp with improved color rendering properties | William M. Keeffe | 1991-10-15 |
| 5003214 | Metal halide lamp having reflective coating on the arc tube | James C. Morris, William M. Keeffe | 1991-03-26 |
| 4890030 | Metal halide discharge lamp with arc tube temperature equalizing means | William M. Keeffe | 1989-12-26 |
| 4859899 | Metal-halide lamp having heat redistribution means | William M. Keeffe, Robert J. Karlotski, James C. Morris | 1989-08-22 |
| 4825127 | Metal halide discharge lamp for plant growing | William M. Keeffe | 1989-04-25 |
| 4791334 | Metal-halide lamp having heat redistribution means | William M. Keeffe, Robert J. Karlotski, James C. Morris | 1988-12-13 |
| 4709184 | Low wattage metal halide lamp | William M. Keeffe | 1987-11-24 |
| 4636687 | Electrode alignment and capsule design for single-ended low wattage metal halide lamps | William M. Keeffe, W. Calvin Gungle, Harold L. Rothwell, Jr. | 1987-01-13 |
| 4625141 | Low wattage metal halide discharge lamp electrically biased to reduce sodium loss | William M. Keeffe, Robert J. Karlotski | 1986-11-25 |
| 4620125 | Low wattage metal halide lamp with inverted domed sleeve | William M. Keeffe, Robert J. Karlotski | 1986-10-28 |
| 4620130 | Electrode alignment and capsule design for single-ended low wattage metal halide lamps | William M. Keeffe, W. Calvin Gungle, Harold L. Rothwell, Jr. | 1986-10-28 |