Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8461754 | High efficiency glass halogen lamp with interference coating | Ashfaqul Islam Chowdhury, William Robert Wright | 2013-06-11 |
| 6208090 | Reduced voltage and time delay to eliminate filament hot shock | Ludwig Skilskyj, Laszlo Lieszkovszky, Edward J. Collins | 2001-03-27 |
| 5536991 | Lamp having silica protective coating | Thomas G. Parham, Pamela K. Whitman | 1996-07-16 |
| 5168193 | Lamp having boron nitride reflective coating | — | 1992-12-01 |
| 4959585 | Electric incandescent lamp and method of manufacture therefor | Gerald A. Johnson, Diana M. Essock, Kent Kipling | 1990-09-25 |
| 4839559 | Radiant energy incandescent lamp | Frederic F. Ahlgren, Rolf S. Bergman, John M. Davenport, Richard L. Hansler, Robert G. Hantman | 1989-06-13 |
| 4588923 | High efficiency tubular heat lamps | Lee W. Otto | 1986-05-13 |